add 5 exercises

data/1.C语言初阶/1.C语言概述/1.C语言发展史/helloworld.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     printf("Hello, World!\n");
     return 0;

data/1.C语言初阶/1.C语言概述/1.C语言发展史/helloworld.md

@@ -6,7 +6,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     printf("Hello, World!\n");
     return 0;
@@ -20,7 +20,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     printf("Hello, World!\n")
     return 0
@@ -32,7 +32,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     printf("Hello, World!\n");
     return;

data/1.C语言初阶/1.C语言概述/2.C语言特点/features.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     const int row = 7;
     const int col = 50;

data/1.C语言初阶/1.C语言概述/2.C语言特点/features.md

@@ -6,7 +6,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     const int row = 7;
     const int col = 50;
@@ -35,7 +35,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     const int row = 7;
     const int col = 50;
@@ -62,7 +62,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     const int row = 7;
     const int col = 50;
@@ -89,7 +89,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     const int row = 7;
     const int col = 50;

data/1.C语言初阶/2.数据类型/1.变量/variables.c

 #include <stdio.h>
 #include <stdbool.h>
 
-int main()
+int main(int argc, char** argv)
 {
     bool num = 1;
     bool max_num = 10;

data/1.C语言初阶/2.数据类型/1.变量/variables.md

@@ -6,7 +6,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int num = 1;
     int max_num = 10;
@@ -31,7 +31,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     num = 1;
     max_num = 10;
@@ -54,7 +54,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int num(1);
     int max_num(10);
@@ -78,7 +78,7 @@ int main()
 #include <stdio.h>
 #include <stdbool.h>
 
-int main()
+int main(int argc, char** argv)
 {
     bool num = 1;
     bool max_num = 10;

data/1.C语言初阶/2.数据类型/2.常量/constants.c

@@ -2,7 +2,7 @@
 
 #define PI 314e-2
 
-int main()
+int main(int argc, char** argv)
 {
     float radius = 2.0;
     float area = PI * radius * radius;

data/1.C语言初阶/2.数据类型/2.常量/constants.md

@@ -6,7 +6,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     const float PI;
     PI = 3.14;
@@ -28,7 +28,7 @@ int main()
 
 #define PI 3.14
 
-int main()
+int main(int argc, char** argv)
 {
     float radius = 2.0;
     float area = PI * radius * radius;
@@ -44,7 +44,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     const float PI = 3.14;
     float radius = 2.0;
@@ -63,7 +63,7 @@ int main()
 
 #define PI 314e-2
 
-int main()
+int main(int argc, char** argv)
 {
     float radius = 2.0;
     float area = PI * radius * radius;

data/1.C语言初阶/2.数据类型/3.基本数据类型/basic_data_types.c

 #include <stdbool.h>
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int student_id = 1001;
     char name[] = "张三";

data/1.C语言初阶/2.数据类型/3.基本数据类型/basic_data_types.md

@@ -8,7 +8,7 @@
 #include <stdbool.h>
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int student_id = 1001;
     char name[] = "张三";
@@ -38,7 +38,7 @@ int main()
 #include <stdbool.h>
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int student_id = 1001;
     char name[] = "张三";
@@ -66,7 +66,7 @@ int main()
 #include <stdbool.h>
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int student_id = 1001;
     char name[] = "张三";
@@ -94,7 +94,7 @@ int main()
 #include <stdbool.h>
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int student_id = 1001;
     char name[] = "张三";

data/1.C语言初阶/3.运算符与表达式/1.赋值运算符与表达式/assignment_op.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a = b = c = 10;
 

data/1.C语言初阶/3.运算符与表达式/1.赋值运算符与表达式/assignment_op.md

@@ -6,7 +6,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a = b = c = 10;
 
@@ -24,7 +24,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a = 10, b = 10, c = 10;
 
@@ -41,7 +41,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c;
     a = 10;
@@ -61,7 +61,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c;
     a = b = c = 10;

data/1.C语言初阶/3.运算符与表达式/2.算术运算符与表达式/arithmetic_op.c

@@ -2,7 +2,7 @@
 
 #define UPPER 100
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 1;
     while (i++ < UPPER)

data/1.C语言初阶/3.运算符与表达式/2.算术运算符与表达式/arithmetic_op.md

@@ -9,7 +9,7 @@
 
 #define UPPER 100
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 1;
     while (i++ < UPPER)
@@ -29,7 +29,7 @@ int main()
 
 #define UPPER 100
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 1;
     while (i++ < UPPER)
@@ -47,7 +47,7 @@ int main()
 
 #define UPPER 100
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 1;
     while (++i < UPPER)
@@ -65,7 +65,7 @@ int main()
 
 #define UPPER 100
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 1;
     while (i < UPPER)

data/1.C语言初阶/3.运算符与表达式/3.关系运算符与表达式/relational_op.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int start_1, end_1;
     int start_2, end_2;

data/1.C语言初阶/3.运算符与表达式/3.关系运算符与表达式/relational_op.md

@@ -6,7 +6,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int start_1, end_1;
     int start_2, end_2;
@@ -31,7 +31,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int start_1, end_1;
     int start_2, end_2;
@@ -57,7 +57,7 @@ int main()
 #define MAX(a,b) ((a > b) ? a : b)
 #define MIN(a,b) ((a < b) ? a : b)
 
-int main()
+int main(int argc, char** argv)
 {
     int start_1, end_1;
     int start_2, end_2;
@@ -83,7 +83,7 @@ int main()
 #define MAX(a,b) ((a > b) ? a : b)
 #define MIN(a,b) ((a < b) ? a : b)
 
-int main()
+int main(int argc, char** argv)
 {
     int start_1, end_1;
     int start_2, end_2;

data/1.C语言初阶/3.运算符与表达式/4.逻辑运算符与表达式/logical_op.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int year;
     printf("请输人年份：");

data/1.C语言初阶/3.运算符与表达式/4.逻辑运算符与表达式/logical_op.md

@@ -12,7 +12,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int year;
     printf("请输人年份：");
@@ -37,7 +37,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int year;
     printf("请输人年份：");
@@ -60,7 +60,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int year;
     printf("请输人年份：");
@@ -83,7 +83,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int year;
     printf("请输人年份：");

data/1.C语言初阶/3.运算符与表达式/5.逗号运算符与表达式/comma_op.c

@@ -2,7 +2,7 @@
 #define FIRST_COST 6
 #define NEXT_COST 2
 
-int main()
+int main(int argc, char** argv)
 {
     int weight, cost;
 

data/1.C语言初阶/3.运算符与表达式/5.逗号运算符与表达式/comma_op.md

@@ -12,7 +12,7 @@
 #define FIRST_COST 6
 #define NEXT_COST 2
 
-int main()
+int main(int argc, char** argv)
 {
     int weight, cost;
 
@@ -35,7 +35,7 @@ int main()
 #define FIRST_COST 6
 #define NEXT_COST 2
 
-int main()
+int main(int argc, char** argv)
 {
     int weight, cost;
 
@@ -56,7 +56,7 @@ int main()
 #define FIRST_COST 6
 #define NEXT_COST 2
 
-int main()
+int main(int argc, char** argv)
 {
     int weight, cost;
 
@@ -77,7 +77,7 @@ int main()
 #define FIRST_COST 6
 #define NEXT_COST 2
 
-int main()
+int main(int argc, char** argv)
 {
     int weight, cost;
 

data/1.C语言初阶/3.运算符与表达式/6.条件运算符/conditional_op.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, max;
     printf("请输入3个整数：");

data/1.C语言初阶/3.运算符与表达式/6.条件运算符/conditional_op.md

@@ -7,7 +7,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, max;
     printf("请输入3个整数：");
@@ -26,7 +26,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, max;
     printf("请输入3个整数：");
@@ -44,7 +44,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, max;
     printf("请输入3个整数：");
@@ -62,7 +62,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, max;
     printf("请输入3个整数：");

data/1.C语言初阶/3.运算符与表达式/7.sizeof运算符/sizeof_op.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int arr[] = {1,2,3,4,5};
     size_t len = sizeof(arr) / sizeof int;

data/1.C语言初阶/3.运算符与表达式/7.sizeof运算符/sizeof_op.md

@@ -7,7 +7,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int arr[] = {1,2,3,4,5};
     size_t len = sizeof(arr) / sizeof int;
@@ -26,7 +26,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int arr[] = {1,2,3,4,5};
     size_t len = sizeof(arr) / sizeof(int);
@@ -44,7 +44,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int arr[] = {1,2,3,4,5};
     size_t len = sizeof arr / sizeof(int);
@@ -62,7 +62,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int arr[] = {1,2,3,4,5};
     size_t len = sizeof(arr) / sizeof(arr[0]);

data/1.C语言初阶/3.运算符与表达式/8.运算符优先级与求值顺序/precedence.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, z;
     x = y = 1;

data/1.C语言初阶/3.运算符与表达式/8.运算符优先级与求值顺序/precedence.md

@@ -7,7 +7,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, z;
     x = y = 1;
@@ -23,7 +23,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, z;
     x = y = 1;
@@ -37,7 +37,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, z;
     x = y = 1;
@@ -50,7 +50,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, z;
     x = y = 1;

data/1.C语言初阶/4.语句与控制流/1.语句与程序块/statements_n_blocks.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     char str[] = "Hello World!";
     size_t len = sizeof(str) / sizeof(char);

data/1.C语言初阶/4.语句与控制流/1.语句与程序块/statements_n_blocks.md

@@ -7,7 +7,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     char str[] = "Hello World!";
     size_t len = sizeof(str) / sizeof(char);
@@ -25,7 +25,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     char str[] = "Hello World!";
     size_t len = sizeof(str) / sizeof(char);
@@ -42,7 +42,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     char str[] = "Hello World!";
     size_t len = sizeof(str) / sizeof(char);
@@ -61,7 +61,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     char str[] = "Hello World!";
     size_t len = sizeof(str) / sizeof(char);

data/1.C语言初阶/4.语句与控制流/2.判断语句/elseif.c

 #include <stdio.h>
 #include <math.h>
 
-int main()
+int main(int argc, char** argv)
 {
     float a, b, c;
 

data/1.C语言初阶/4.语句与控制流/2.判断语句/elseif.md

@@ -8,7 +8,7 @@
 #include <stdio.h>
 #include <math.h>
 
-int main()
+int main(int argc, char** argv)
 {
     float a, b, c;
 
@@ -43,7 +43,7 @@ int main()
 #include <stdio.h>
 #include <math.h>
 
-int main()
+int main(int argc, char** argv)
 {
     float a, b, c;
 
@@ -76,7 +76,7 @@ int main()
 #include <stdio.h>
 #include <math.h>
 
-int main()
+int main(int argc, char** argv)
 {
     float a, b, c;
 
@@ -109,7 +109,7 @@ int main()
 #include <stdio.h>
 #include <math.h>
 
-int main()
+int main(int argc, char** argv)
 {
     float a, b, c;
 

data/1.C语言初阶/4.语句与控制流/2.判断语句/if.c

@@ -8,7 +8,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c;
     printf("请输入 a,b,c:\n"); 

data/1.C语言初阶/4.语句与控制流/2.判断语句/if.md

@@ -15,7 +15,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c;
     printf("请输入 a,b,c:\n"); 
@@ -50,7 +50,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c;
     printf("请输入 a,b,c:\n"); 
@@ -83,7 +83,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c;
     printf("请输入 a,b,c:\n"); 
@@ -116,7 +116,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c;
     printf("请输入 a,b,c:\n"); 

data/1.C语言初阶/4.语句与控制流/2.判断语句/ifelse.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int num_1 = 0;
     int num_2 = 0;

data/1.C语言初阶/4.语句与控制流/2.判断语句/ifelse.md

@@ -7,7 +7,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int num_1 = 0;
     int num_2 = 0;
@@ -36,7 +36,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int num_1 = 0;
     int num_2 = 0;
@@ -63,7 +63,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int num_1 = 0;
     int num_2 = 0;
@@ -90,7 +90,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int num_1 = 0;
     int num_2 = 0;

data/1.C语言初阶/4.语句与控制流/2.判断语句/switch.c

 #include<stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int score;
     printf("请输入成绩：");

data/1.C语言初阶/4.语句与控制流/2.判断语句/switch.md

@@ -15,7 +15,7 @@
 ```c
 #include<stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int score;
     printf("请输入成绩：");
@@ -57,7 +57,7 @@ int main()
 ```c
 #include<stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int score;
     printf("请输入成绩：");
@@ -97,7 +97,7 @@ int main()
 ```c
 #include<stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int score;
     printf("请输入成绩：");
@@ -137,7 +137,7 @@ int main()
 ```c
 #include<stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int score;
     printf("请输入成绩：");

data/1.C语言初阶/4.语句与控制流/3.循环语句/for.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int j = 0;

data/1.C语言初阶/4.语句与控制流/3.循环语句/for.md

@@ -7,7 +7,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int j = 0;
@@ -28,7 +28,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int j = 0;
@@ -48,7 +48,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int j = 0;
@@ -68,7 +68,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int j = 0;

data/1.C语言初阶/4.语句与控制流/3.循环语句/goto.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int sum = 0;
     int i = 0;

data/1.C语言初阶/4.语句与控制流/3.循环语句/goto.md

@@ -6,7 +6,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int sum = 0;
     int i = 0;
@@ -27,7 +27,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int sum = 0;
     int i = 0;
@@ -47,7 +47,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int sum = 0;
     int i = 0;
@@ -67,7 +67,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int sum = 0;
     int i = 0;

data/1.C语言初阶/4.语句与控制流/3.循环语句/while.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, m, t;
     printf("请输入两个数：");

data/1.C语言初阶/4.语句与控制流/3.循环语句/while.md

@@ -9,7 +9,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, m, t;
     printf("请输入两个数：");
@@ -43,7 +43,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, m, t;
     printf("请输入两个数：");
@@ -73,7 +73,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, m, t;
     printf("请输入两个数：");
@@ -105,7 +105,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int a, b, c, m, t;
     printf("请输入两个数：");

data/2.C语言中阶/1.函数与程序结构/1.函数的声明与定义/definition.c

@@ -3,7 +3,7 @@
 void print_link();
 void print_skill_tree();
 
-int main()
+int main(int argc, char** argv)
 {
     print_skill_tree();
     return 0;

data/2.C语言中阶/1.函数与程序结构/1.函数的声明与定义/definition.md

@@ -9,7 +9,7 @@
 void print_link();
 void print_skill_tree();
 
-int main()
+int main(int argc, char** argv)
 {
     print_skill_tree();
     return 0;
@@ -44,7 +44,7 @@ void print_link()
     printf("https://bbs.csdn.net/skill/c");
 }
 
-int main()
+int main(int argc, char** argv)
 {
     print_skill_tree();
     return 0;
@@ -58,7 +58,7 @@ int main()
 void print_link();
 void print_skill_tree();
 
-int main()
+int main(int argc, char** argv)
 {
     print_skill_tree();
     return 0;
@@ -84,7 +84,7 @@ void print_skill_tree()
 void print_link(char);
 void print_skill_tree();
 
-int main()
+int main(int argc, char** argv)
 {
     print_skill_tree();
     return 0;

data/2.C语言中阶/1.函数与程序结构/2.函数的参数/parameter_n_argument.c

@@ -15,7 +15,7 @@ int sum(int a, int b) {
     return a;
 }
 
-int main() {
+int main(int argc, char** argv) {
     int m, n, total;
 
     printf("请输入两个整数：");

data/2.C语言中阶/1.函数与程序结构/2.函数的参数/parameter_n_argument.md

@@ -22,7 +22,7 @@ int sum(int a, int b) {
     return a;
 }
 
-int main() {
+int main(int argc, char** argv) {
     int m, n, total;
 
     printf("请输入两个整数：");
@@ -60,7 +60,7 @@ void sum(int a, int b, int t) {
     }
 }
 
-int main() {
+int main(int argc, char** argv) {
     int m, n, total = 0;
 
     printf("请输入两个整数：");
@@ -97,7 +97,7 @@ int sum(int a, int b) {
     return a;
 }
 
-int main() {
+int main(int argc, char** argv) {
     int m, n, total;
 
     printf("请输入两个整数：");
@@ -122,7 +122,7 @@ int main() {
 int sum(int, int, int);
 void swap(int*, int*, int*);
 
-int main() {
+int main(int argc, char** argv) {
     int m, n, total;
 
     printf("请输入两个整数：");

data/2.C语言中阶/1.函数与程序结构/3.函数的返回/return.c

@@ -28,7 +28,7 @@ void prime(int n)
         printf("%d 不是一个素数！\n", n);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int num, is_prime;
     printf("请输入一个整数：");

data/2.C语言中阶/1.函数与程序结构/3.函数的返回/return.md

@@ -35,7 +35,7 @@ void prime(int n)
         printf("%d 不是一个素数！\n", n);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int num, is_prime;
     printf("请输入一个整数：");
@@ -72,7 +72,7 @@ int prime(int n)
     return is_prime;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int num, is_prime;
     printf("请输入一个整数：");
@@ -122,7 +122,7 @@ void prime(int n)
         printf("%d 不是一个素数！\n", n);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int num, is_prime;
     printf("请输入一个整数：");
@@ -156,7 +156,7 @@ int prime(int n)
     return is_prime;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int num;
     printf("请输入一个整数：");

data/2.C语言中阶/1.函数与程序结构/4.函数的调用/function_call.c

@@ -25,7 +25,7 @@ char* china()
     return "中国-->";
 }
 
-int main()
+int main(int argc, char** argv)
 {
     printf("%s%s%s%s%s", china(), hunan(), changsha(), yueluqu(), csdn());
     printf("https://www.csdn.net/");

data/2.C语言中阶/1.函数与程序结构/4.函数的调用/function_call.md

@@ -38,7 +38,7 @@ void china()
 china();
 printf("https://www.csdn.net/");
 
-int main()
+int main(int argc, char** argv)
 {
     return 0;
 }
@@ -74,7 +74,7 @@ void china()
     printf("中国-->");
 }
 
-int main()
+int main(int argc, char** argv)
 {
     china();
     hunan();
@@ -119,7 +119,7 @@ void china()
     printf("中国-->");
 }
 
-int main()
+int main(int argc, char** argv)
 {
     china();
     printf("https://www.csdn.net/");
@@ -157,7 +157,7 @@ char* china()
     return "中国-->";
 }
 
-int main()
+int main(int argc, char** argv)
 {
     printf("%s%s%s%s%s", china(), hunan(), changsha(), yueluqu(), csdn());
     printf("https://www.csdn.net/");

data/2.C语言中阶/1.函数与程序结构/5.函数的递归/recursion.c

@@ -9,7 +9,7 @@ int fibonacci(int i)
     return fibonacci(i - 1) + fibonacci(i - 2);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int n = 0;

data/2.C语言中阶/1.函数与程序结构/5.函数的递归/recursion.md

@@ -15,7 +15,7 @@ int fibonacci(int i)
     return fibonacci(i - 1) + fibonacci(i - 2);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int n = 0;
@@ -45,7 +45,7 @@ int fibonacci(int i)
     return fibonacci(i - 1) + fibonacci(i + 1);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int n = 0;
@@ -74,7 +74,7 @@ int fibonacci(int i)
     return fibonacci(i - 1) + fibonacci(i - 2);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int n = 0;
@@ -103,7 +103,7 @@ int fibonacci(int i)
     return fibonacci(i - 1) + fibonacci(i - 2);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i = 0;
     int n = 0;

data/2.C语言中阶/1.函数与程序结构/6.局部变量和全局变量/global_n_local_var.c

@@ -12,7 +12,7 @@ int vs(int a, int b, int c)
     return v;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int v, length, width, height;
     printf("请分别输入长方体的长宽高：");

data/2.C语言中阶/1.函数与程序结构/6.局部变量和全局变量/global_n_local_var.md

@@ -18,7 +18,7 @@ int vs(int a, int b, int c)
     return v;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int v, length, width, height;
     printf("请分别输入长方体的长宽高：");
@@ -48,7 +48,7 @@ int vs(int a, int b, int c)
 
 int s1, s2, s3;
 
-int main()
+int main(int argc, char** argv)
 {
     int v, length, width, height;
     printf("请分别输入长方体的长宽高：");
@@ -75,7 +75,7 @@ int vs(int a, int b, int c)
     return v;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int v, length, width, height;
     printf("请分别输入长方体的长宽高：");
@@ -104,7 +104,7 @@ int vs(int a, int b, int c)
     return v;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int v, length, width, height;
     printf("请分别输入长方体的长宽高：");

data/2.C语言中阶/1.函数与程序结构/7.头文件/config.json

@@ -6,5 +6,5 @@
     "C语言"
   ],
   "children": [],
-  "export": []
+  "export": ["header.json"]
 }
\ No newline at end of file

data/2.C语言中阶/1.函数与程序结构/7.头文件/func.c

+#include "func.h"
+
+int steps(int n)
+{
+    if (n < 0)
+        return 0;
+    if (n == 0 || n == 1)
+        return 1;
+    if (n == 2)
+        return 2;
+    return steps(n - 1) + steps(n - 2) + steps(n - 3);
+}

data/2.C语言中阶/1.函数与程序结构/7.头文件/func.h

+#ifndef FUNC_FILE
+#define FUNC_FILE
+
+int steps(int n);
+
+#endif

data/2.C语言中阶/1.函数与程序结构/7.头文件/header.c

+#include <stdio.h>
+#include "func.h"
+
+int main(int argc, char** argv)
+{
+    int n;
+    printf("请输入台阶数量(n)：");
+    scanf("%d", &n);
+    printf("一共有 %d 种走完楼梯的方式!\n", steps(n));
+    return 0;
+}
\ No newline at end of file

data/2.C语言中阶/1.函数与程序结构/7.头文件/header.json

+{
+    "type": "code_options",
+    "author": "卢昕",
+    "source": "header.md",
+    "exercise_id":"19ecabeb7b9b4043848e68925c4d0cd7"
+}
\ No newline at end of file

data/2.C语言中阶/1.函数与程序结构/7.头文件/header.md

+# 上楼梯问题
+
+楼梯有n阶台阶，一次可以上1阶、2阶或者3阶台阶，使用递归的方法计算出有多少种走完楼梯的方式。请选出错误答案。
+
+## 答案
+```c
+// func.h
+int n = 0;
+int steps(int n);
+
+// func.c
+#include "func.h"
+
+int steps(int n)
+{
+    if (n < 0)
+        return 0;
+    if (n == 0 || n == 1)
+        return 1;
+    if (n == 2)
+        return 2;
+    return steps(n - 1) + steps(n - 2) + steps(n - 3);
+}
+
+// header.c
+#include <stdio.h>
+#include "func.h"
+
+int main(int argc, char** argv)
+{
+    printf("请输入台阶数量(n)：");
+    scanf("%d", &n);
+    printf("一共有 %d 种走完楼梯的方式!\n", steps(n));
+    return 0;
+}
+```
+
+## 选项
+### A
+```c
+// func.h
+#ifndef FUNC_FILE
+#define FUNC_FILE
+
+int n;
+int steps(int);
+
+#endif
+
+// func.c
+#include "func.h"
+
+int n = 0;
+
+int steps(int n)
+{
+    if (n < 0)
+        return 0;
+    if (n == 0 || n == 1)
+        return 1;
+    if (n == 2)
+        return 2;
+    return steps(n - 1) + steps(n - 2) + steps(n - 3);
+}
+
+// header.c
+#include <stdio.h>
+#include "func.h"
+
+int main(int argc, char** argv)
+{
+    printf("请输入台阶数量(n)：");
+    scanf("%d", &n);
+    printf("一共有 %d 种走完楼梯的方式!\n", steps(n));
+    return 0;
+}
+```
+
+### B
+```c
+// func.h
+#ifndef FUNC_FILE
+#define FUNC_FILE
+
+int n = 0;
+
+int steps(int n)
+{
+    if (n < 0)
+        return 0;
+    if (n == 0 || n == 1)
+        return 1;
+    if (n == 2)
+        return 2;
+    return steps(n - 1) + steps(n - 2) + steps(n - 3);
+}
+
+#endif
+
+// header.c
+#include <stdio.h>
+#include "func.h"
+
+int main(int argc, char** argv)
+{
+    printf("请输入台阶数量(n)：");
+    scanf("%d", &n);
+    printf("一共有 %d 种走完楼梯的方式!\n", steps(n));
+    return 0;
+}
+```
+
+### C
+```c
+// func.h
+#ifndef FUNC_FILE
+#define FUNC_FILE
+
+int steps(int);
+
+#endif
+
+// func.c
+#include "func.h"
+
+int steps(int n)
+{
+    if (n < 0)
+        return 0;
+    if (n == 0 || n == 1)
+        return 1;
+    if (n == 2)
+        return 2;
+    return steps(n - 1) + steps(n - 2) + steps(n - 3);
+}
+
+// header.c
+#include <stdio.h>
+#include "func.h"
+
+int main(int argc, char** argv)
+{
+    int i;
+    printf("请输入台阶数量(n)：");
+    scanf("%d", &n);
+    printf("一共有 %d 种走完楼梯的方式!\n", steps(n));
+    return 0;
+}
+```

data/2.C语言中阶/2.数组/1.数组简介/array_def.c

 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     int i;
     int arr[LEN];

data/2.C语言中阶/2.数组/1.数组简介/array_def.md

@@ -8,7 +8,7 @@
 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     int i;
     int arr[LEN];
@@ -29,7 +29,7 @@ int main()
 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     int i;
     int arr[] = {1, 2, 3, 4, 5};
@@ -48,7 +48,7 @@ int main()
 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     int i;
     int arr[LEN] = {1, 2, 3, 4, 5};
@@ -67,7 +67,7 @@ int main()
 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     int i;
     int arr[LEN];

data/2.C语言中阶/2.数组/2.一维数组/bubble_sort.c

@@ -10,7 +10,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, temp;
     bool is_sorted = false;

data/2.C语言中阶/2.数组/2.一维数组/bubble_sort.md

@@ -16,7 +16,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, temp;
     bool is_sorted = false;
@@ -60,7 +60,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, temp;
     int len = 10;
@@ -104,7 +104,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, temp;
     bool is_sorted = false;
@@ -147,7 +147,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, temp;
     bool is_sorted = false;

data/2.C语言中阶/2.数组/3.二维数组/matrix.c

@@ -11,7 +11,7 @@ void print_matrix(int mat[][LEN], int row, int col)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, row, col, num, m[LEN][LEN], t[LEN][LEN];
 

data/2.C语言中阶/2.数组/3.二维数组/matrix.md

@@ -18,7 +18,7 @@ void print_matrix(int mat[][LEN], int row, int col)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, row, col, num, m[LEN][LEN], t[LEN][LEN];
 
@@ -63,7 +63,7 @@ void print_matrix(int mat[][LEN], int row, int col)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, row, col, num, m[LEN][LEN], t[LEN][LEN];
 
@@ -107,7 +107,7 @@ void print_matrix(int mat[][LEN], int row, int col)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, row, col, num, m[LEN][LEN], t[LEN][LEN];
 
@@ -150,7 +150,7 @@ void print_matrix(int mat[][LEN], int row, int col)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, row, col, num, m[LEN][LEN], t[LEN][LEN];
 

data/2.C语言中阶/2.数组/4.变长数组/vla.c

@@ -13,7 +13,7 @@ int sum_2d_array(int rows, int cols, int arr[rows][cols])
     return sum;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, rows, cols, sum;
     rows = 2, cols = 5;

data/2.C语言中阶/2.数组/4.变长数组/vla.md

@@ -20,7 +20,7 @@ int sum_2d_array(int rows, int cols, int arr[rows][cols])
     return sum;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, rows, cols, sum;
     rows = 2, cols = 5;
@@ -60,7 +60,7 @@ int sum_2d_array(int rows, int cols, int arr[rows][cols])
     return sum;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, rows, cols, sum;
     rows = 2, cols = 5;
@@ -97,7 +97,7 @@ int sum_2d_array(int rows, int cols, int arr[][])
     return sum;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, rows, cols, sum;
     rows = 2, cols = 5;
@@ -136,7 +136,7 @@ int sum_2d_array(int arr[rows][cols], int rows, int cols)
     return sum;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j, rows, cols, sum;
     rows = 2, cols = 5;

data/2.C语言中阶/3.指针/1.指针与地址/pointers.c

 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     int* pt_x;

data/2.C语言中阶/3.指针/1.指针与地址/pointers.md

@@ -6,7 +6,7 @@
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     int* pt_x;
@@ -33,7 +33,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     int* pt_x, pt_y;
@@ -56,7 +56,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     int* pt_x;
@@ -81,7 +81,7 @@ int main()
 ```c
 #include <stdio.h>
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     int* pt_x;

data/2.C语言中阶/3.指针/2.指针与函数参数/pointers_n_func.c

@@ -7,7 +7,7 @@ void swap(int** x, int** y)
     **y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     int* pt_x;

data/2.C语言中阶/3.指针/2.指针与函数参数/pointers_n_func.md

@@ -14,7 +14,7 @@ void swap(int x, int y)
     y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     x = 2, y = 8;
@@ -41,7 +41,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     int* pt_x;
@@ -71,7 +71,7 @@ void swap(int* x, int* y)
     *y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     x = 2, y = 8;
@@ -96,7 +96,7 @@ void swap(int** x, int** y)
     **y = temp;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y;
     int* pt_x;

data/2.C语言中阶/3.指针/3.指针与数组/pointers_n_array.c

 #include <stdio.h>
 #define LEN 10
 
-int main()
+int main(int argc, char** argv)
 {
     int i, max, index = 0;
     int arr[LEN] = {7, 2, 1, 3, 6, 9, 4, 10, 5, 8};

data/2.C语言中阶/3.指针/3.指针与数组/pointers_n_array.md

@@ -8,7 +8,7 @@
 #include <stdio.h>
 #define LEN 10
 
-int main()
+int main(int argc, char** argv)
 {
     int i, max, index = 0;
     int arr[LEN] = {7, 2, 1, 3, 6, 9, 4, 10, 5, 8};
@@ -35,7 +35,7 @@ int main()
 #include <stdio.h>
 #define LEN 10
 
-int main()
+int main(int argc, char** argv)
 {
     int i, max, index = 0;
     int arr[LEN] = {7, 2, 1, 3, 6, 9, 4, 10, 5, 8};
@@ -61,7 +61,7 @@ int main()
 #include <stdio.h>
 #define LEN 10
 
-int main()
+int main(int argc, char** argv)
 {
     int i, max, index = 0;
     int arr[LEN] = {7, 2, 1, 3, 6, 9, 4, 10, 5, 8};
@@ -87,7 +87,7 @@ int main()
 #include <stdio.h>
 #define LEN 10
 
-int main()
+int main(int argc, char** argv)
 {
     int i, max, index = 0;
     int arr[LEN] = {7, 2, 1, 3, 6, 9, 4, 10, 5, 8};

data/2.C语言中阶/3.指针/4.地址算术运算/pointers_arithmetic_op.c

@@ -2,7 +2,7 @@
 #define ROW 3
 #define COL 4
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     int mat[ROW][COL] = {

data/2.C语言中阶/3.指针/4.地址算术运算/pointers_arithmetic_op.md

@@ -9,7 +9,7 @@
 #define ROW 3
 #define COL 4
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     int mat[ROW][COL] = {
@@ -38,7 +38,7 @@ int main()
 #define ROW 3
 #define COL 4
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     int mat[ROW][COL] = {
@@ -64,7 +64,7 @@ int main()
 #define ROW 3
 #define COL 4
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     int mat[ROW][COL] = {
@@ -90,7 +90,7 @@ int main()
 #define ROW 3
 #define COL 4
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     int mat[ROW][COL] = {

data/2.C语言中阶/3.指针/5.指针数组以及指向指针的指针/pointers_array.c

 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     char *fruits[LEN] = {
         "apple",

data/2.C语言中阶/3.指针/5.指针数组以及指向指针的指针/pointers_array.md

@@ -7,7 +7,7 @@
 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     char *fruits[LEN] = {
         "apple",
@@ -32,7 +32,7 @@ int main()
 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     char *fruits[LEN] = {
         "apple",
@@ -56,7 +56,7 @@ int main()
 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     char *fruits[LEN] = {
         "apple",
@@ -81,7 +81,7 @@ int main()
 #include <stdio.h>
 #define LEN 5
 
-int main()
+int main(int argc, char** argv)
 {
     char *fruits[LEN] = {
         "apple",

data/2.C语言中阶/3.指针/6.指向函数的指针/pointers_2_func.c

@@ -5,7 +5,7 @@ int max(int a, int b)
     return a > b ? a : b;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, max_val;
     int (*p_max)(int a, int b) = max;

data/2.C语言中阶/3.指针/6.指向函数的指针/pointers_2_func.md

@@ -12,7 +12,7 @@ int max(int a, int b)
     return a > b ? a : b;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, max_val;
     int *p_max(int, int) = max;
@@ -39,7 +39,7 @@ int max(int a, int b)
     return a > b ? a : b;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, max_val;
     int (*p_max)(int, int) = &max;
@@ -64,7 +64,7 @@ int max(int a, int b)
     return a > b ? a : b;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, max_val;
     int (*p_max)(int, int) = max;
@@ -89,7 +89,7 @@ int max(int a, int b)
     return a > b ? a : b;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int x, y, max_val;
     int (*p_max)(int a, int b) = max;

data/2.C语言中阶/4.字符串/1.字符串输入与输出/string_io.c

@@ -18,7 +18,7 @@ void reverse(char *str)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     char str[STR_LEN];
     char *rev_str = NULL;

data/2.C语言中阶/4.字符串/1.字符串输入与输出/string_io.md

@@ -24,7 +24,7 @@ void reverse(char *str)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     char str[STR_LEN];
     char *rev_str = NULL;
@@ -61,7 +61,7 @@ void reverse(char *str)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     char str[STR_LEN];
     char *rev_str = NULL;
@@ -97,7 +97,7 @@ void reverse(char *str)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     char str[STR_LEN];
     char *rev_str = NULL;
@@ -132,7 +132,7 @@ void reverse(char *str)
     }
 }
 
-int main()
+int main(int argc, char** argv)
 {
     char str[STR_LEN];
     char *rev_str = NULL;

data/2.C语言中阶/4.字符串/2.字符串函数/string_func.c

@@ -4,7 +4,7 @@
 #define WORDS_NUM 2
 #define STR_LEN 101
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     char words[SENT_LEN][STR_LEN] = {"非", "淡泊", "无以", "明志", "！"};

data/2.C语言中阶/4.字符串/2.字符串函数/string_func.md

@@ -20,7 +20,7 @@
 #define WORDS_NUM 2
 #define STR_LEN 101
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     char words[SENT_LEN][STR_LEN] = {"非", "淡泊", "无以", "明志", "！"};
@@ -56,7 +56,7 @@ int main()
 #define WORDS_NUM 2
 #define STR_LEN 101
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     char words[SENT_LEN][STR_LEN] = {"非", "淡泊", "无以", "明志", "！"};
@@ -91,7 +91,7 @@ int main()
 #define WORDS_NUM 2
 #define STR_LEN 101
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     char* words[SENT_LEN] = {"非", "淡泊", "无以", "明志", "！"};
@@ -126,7 +126,7 @@ int main()
 #define WORDS_NUM 2
 #define STR_LEN 101
 
-int main()
+int main(int argc, char** argv)
 {
     int i, j;
     char words[SENT_LEN][STR_LEN] = {"非", "淡泊", "无以", "明志", "！"};

data/3.C语言高阶/1.结构体/1.结构体简介/structures.c

@@ -9,7 +9,7 @@ struct Student
     float score;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     struct Student stu;
     stu.name = "张三";

data/3.C语言高阶/1.结构体/1.结构体简介/structures.md

@@ -15,7 +15,7 @@ struct Student
     float score;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     struct Student stu;
     stu.name = "张三";
@@ -47,7 +47,7 @@ struct Student
     float score;
 };
 
-int main()
+int main(int argc, char** argv)
 {
     struct Student stu = {"张三", 1001, 16, 'A', 95.50};
 
@@ -73,7 +73,7 @@ struct Student
     float score;
 } stu = {"张三", 1001, 16, 'A', 95.50};
 
-int main()
+int main(int argc, char** argv)
 {
     printf("========== 学生基本信息 ==========\n");
     printf("姓名：%s\n学号：%d\n年龄：%d\n所在小组：%c\n成绩：%.2f\n",
@@ -97,7 +97,7 @@ typedef struct
     float score;
 } Student;
 
-int main()
+int main(int argc, char** argv)
 {
     Student stu = {"张三", 1001, 16, 'A', 95.50};
 

data/3.C语言高阶/1.结构体/2.结构体数组/structures_array.c

@@ -10,7 +10,7 @@ struct Student
     float score;
 } cls[NUM_STR];
 
-int main()
+int main(int argc, char** argv)
 {
     cls = {
         {"张三", 1001, 16, 'A', 95.50},

data/3.C语言高阶/1.结构体/2.结构体数组/structures_array.md

@@ -16,7 +16,7 @@ struct Student
     float score;
 } cls[NUM_STR];
 
-int main()
+int main(int argc, char** argv)
 {
     cls = {
         {"张三", 1001, 16, 'A', 95.50},
@@ -59,7 +59,7 @@ struct Student
     {"王五", 1003, 16, 'B', 80.50}
 };
 
-int main()
+int main(int argc, char** argv)
 {
     size_t i, num_stu = sizeof(cls) / sizeof(struct Student);
     float total = 0, average = 0;
@@ -96,7 +96,7 @@ struct Student
     "王五", 1003, 16, 'B', 80.50
 };
 
-int main()
+int main(int argc, char** argv)
 {
     size_t i, num_stu = sizeof(cls) / sizeof(struct Student);
     float total = 0, average = 0;
@@ -133,7 +133,7 @@ struct Student
     {.group = 'B', .age = 16, .name = "王五", .score = 80.50, .id = 1003}
 };
 
-int main()
+int main(int argc, char** argv)
 {
     size_t i, num_stu = sizeof(cls) / sizeof(struct Student);
     float total = 0, average = 0;

data/3.C语言高阶/1.结构体/3.结构体指针/structures_pointers.c

@@ -9,7 +9,7 @@ typedef struct
     float score;
 } Student;
 
-int main()
+int main(int argc, char** argv)
 {
     Student stu = {"张三", 1001, 16, 'A', 95.50};
     Student *stu_prt = &stu;

data/3.C语言高阶/1.结构体/3.结构体指针/structures_pointers.md

@@ -16,7 +16,7 @@ typedef struct
     float score;
 } Student;
 
-int main()
+int main(int argc, char** argv)
 {
     Student stu = {"张三", 1001, 16, 'A', 95.50};
     Student *stu_prt = &stu;
@@ -44,7 +44,7 @@ typedef struct
     float score;
 } Student;
 
-int main()
+int main(int argc, char** argv)
 {
     Student stu = {"张三", 1001, 16, 'A', 95.50};
     Student *stu_prt = &stu;
@@ -71,7 +71,7 @@ struct
     float score;
 } stu = {"张三", 1001, 16, 'A', 95.50}, *stu_prt = &stu;
 
-int main()
+int main(int argc, char** argv)
 {
     printf("========== 学生基本信息 ==========\n");
     printf("姓名：%s\n学号：%d\n年龄：%d\n所在小组：%c\n成绩：%.2f\n",
@@ -95,7 +95,7 @@ typedef struct
     float score;
 } Student;
 
-int main()
+int main(int argc, char** argv)
 {
     Student stu;
     Student *stu_prt = &stu;

data/3.C语言高阶/1.结构体/4.结构体与函数/structures_n_func.c

@@ -15,7 +15,7 @@ void print_students(Student stu)
         stu.name, stu.id, stu.age, stu.group, stu.score);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Student cls[] = {
         {"张三", 1001, 16, 'A', 95.50},

data/3.C语言高阶/1.结构体/4.结构体与函数/structures_n_func.md

@@ -21,7 +21,7 @@ void print_students(Student stu)
         stu.name, stu.id, stu.age, stu.group, stu.score);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Student cls[] = {
         {"张三", 1001, 16, 'A', 95.50},
@@ -66,7 +66,7 @@ void print_students(Student *stu)
         stu->name, stu->id, stu->age, stu->group, stu->score);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Student cls[] = {
         {"张三", 1001, 16, 'A', 95.50},
@@ -110,7 +110,7 @@ void print_students(Student *stu)
         *stu.name, *stu.id, *stu.age, *stu.group, *stu.score);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Student cls[] = {
         {"张三", 1001, 16, 'A', 95.50},
@@ -154,7 +154,7 @@ void print_students(Student stu)
         stu->name, stu->id, stu->age, stu->group, stu->score);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Student cls[] = {
         {"张三", 1001, 16, 'A', 95.50},

data/3.C语言高阶/1.结构体/5.链式结构/linked_list.c

@@ -50,7 +50,7 @@ void print_class(const Class cls)
     printf("班级平均成绩：%.2f", average);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Class cls = init_class();
     insert_student(cls, "王五", 1003, 16, 'B', 80.50);

data/3.C语言高阶/1.结构体/5.链式结构/linked_list.md

@@ -56,7 +56,7 @@ void print_class(const Class cls)
     printf("班级平均成绩：%.2f", average);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Class cls = init_class();
     insert_student(cls, "王五", 1003, 16, 'B', 80.50);
@@ -124,7 +124,7 @@ void print_class(const Class cls)
     printf("班级平均成绩：%.2f", average);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Class cls = init_class();
     insert_student(cls, "王五", 1003, 16, 'B', 80.50);
@@ -191,7 +191,7 @@ void print_class(const Class cls)
     printf("班级平均成绩：%.2f", average);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Class cls = init_class();
     insert_student(cls, "王五", 1003, 16, 'B', 80.50);
@@ -258,7 +258,7 @@ void print_class(const Class cls)
     printf("班级平均成绩：%.2f", average);
 }
 
-int main()
+int main(int argc, char** argv)
 {
     Class cls = init_class();
     insert_student(cls, "王五", 1003, 16, 'B', 80.50);

data/3.C语言高阶/2.联合体与枚举类型/1.联合体/unions.c

@@ -15,7 +15,7 @@ typedef struct
     }un;
 }Person;
 
-int main()
+int main(int argc, char** argv)
 {
     Person persons[] = {
         {.name = "张三", .id = 1001, .age = 16, .profession = "学生", .un.score = 95.50},

data/3.C语言高阶/2.联合体与枚举类型/1.联合体/unions.md

@@ -21,7 +21,7 @@ typedef struct
     }un;
 }Person;
 
-int main()
+int main(int argc, char** argv)
 {
     Person persons[] = {
         {.name = "张三", .id = 1001, .age = 16, .profession = "学生", .un.score = 95.50},
@@ -68,7 +68,7 @@ typedef struct
     }un;
 }Person;
 
-int main()
+int main(int argc, char** argv)
 {
     Person persons[] = {
         {.name = "张三", .id = 1001, .age = 16, .profession = "学生", .un.score = 95.50},
@@ -110,7 +110,7 @@ typedef struct
     }un;
 }Person;
 
-int main()
+int main(int argc, char** argv)
 {
     Person persons[] = {
         {"张三", 1001, 16, "学生", 95.50},
@@ -156,7 +156,7 @@ typedef struct
     };
 }Person;
 
-int main()
+int main(int argc, char** argv)
 {
     Person persons[] = {
         {.name = "张三", .id = 1001, .age = 16, .profession = "学生", .un.score = 95.50},

data/3.C语言高阶/2.联合体与枚举类型/2.枚举类型/enum.c

@@ -15,7 +15,7 @@ int cal_day_of_week(int y, int m, int d)
     return dw;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int year, month, day;
     printf("请输入日期(年-月-日)：\n");

data/3.C语言高阶/2.联合体与枚举类型/2.枚举类型/enum.md

@@ -21,7 +21,7 @@ int cal_day_of_week(int y, int m, int d)
     return dw;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int year, month, day;
     printf("请输入日期(年-月-日)：\n");
@@ -62,7 +62,7 @@ int cal_day_of_week(int y, int m, int d)
     return dw;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int year, month, day;
     printf("请输入日期(年-月-日)：\n");
@@ -102,7 +102,7 @@ int cal_day_of_week(int y, int m, int d)
     return dw;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int year, month, day;
     printf("请输入日期(年-月-日)：\n");
@@ -143,7 +143,7 @@ int cal_day_of_week(int y, int m, int d)
     return dw;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int year, month, day;
     printf("请输入日期(年-月-日)：\n");

data/3.C语言高阶/6.存储管理/2.内存动态管理/memory_management.c

@@ -38,7 +38,7 @@ int *readline(int *mem_size)
     return array;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, mem_size, count;
     int *array = readline(&mem_size);

data/3.C语言高阶/6.存储管理/2.内存动态管理/memory_management.md

@@ -44,7 +44,7 @@ int *readline(int *mem_size)
     return array;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, mem_size, count;
     int *array = readline(&mem_size);
@@ -104,7 +104,7 @@ int *readline(int *mem_size)
     return array;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, mem_size, count;
     int *array = readline(&mem_size);
@@ -161,7 +161,7 @@ int *readline(int *mem_size)
     return array;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, mem_size, count;
     int *array = readline(&mem_size);
@@ -222,7 +222,7 @@ int *readline(int *mem_size)
     return array;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int i, mem_size, count;
     int *array = readline(&mem_size);

data/3.C语言高阶/7.标准函数库/1.数学库/math.c

+#include <stdio.h>
+#include <math.h>
+
+enum func_name {Func_1 = 1, Func_2};
+enum func_name fn;
+
+float collect(float s, float t, int m, float (*p)(float x));
+float func_1(float x);
+float func_2(float x);
+
+int main(int argc, char** argv)
+{
+    int n;
+    float a, b, v = 0.0;
+    printf("请输入定积分区间范围，以及子区间的个数(逗号分隔)：\n");
+    scanf("%f,%f,%d", &a, &b, &n);
+    printf("请选择函数你想计算定积分的函数(1表示func_1，2表示func_2)：");
+    scanf("%d", &fn);
+    switch (fn)
+    {
+        case Func_1: v = collect(a, b, n, func_1); break;
+        case Func_2: v = collect(a, b, n, func_2); break;
+        default: break;
+    }
+    printf("------------------------------------------------------------\n");
+    printf("区间[%.2f, %.2f]，划分%d个子区间，函数func_%d的定积分为%.2f\n", a, b, n, fn, v);
+    return 0;
+}
+
+float collect(float s, float t, int n, float (*p)(float x))
+{
+    int i;
+    float f, h, x, y1, y2, area;
+    f = 0.0;
+    h = (t - s) / n;
+    x = s;
+    y1 = (*p)(x);
+    for (i = 1; i <= n; ++i)
+    {
+        x = x + h;
+        y2 = (*p)(x);
+        area = (y1 + y2) * h / 2;
+        y1 = y2;
+        f += area;
+    }
+    return (f);
+}
+
+float func_1(float x)
+{
+    float fx;
+    fx = exp(-x);
+    return (fx);
+}
+
+float func_2(float x)
+{
+    float fx;
+    fx = x * sqrt(1 + cos(2 * x));
+    return (fx);
+}
\ No newline at end of file

data/3.C语言高阶/7.标准函数库/1.数学库/math.md

-# 
+# 函数定积分计算
 
+利用梯形法近似近似计算定积分的值。请选出正确答案。
 
 ## 答案
 ```c
+#include <stdio.h>
+#include <math.h>
 
+enum func_name {Func_1 = 1, Func_2};
+enum func_name fn;
+
+float collect(float s, float t, int m, float (*p)(float x));
+float func_1(float x);
+float func_2(float x);
+
+int main(int argc, char** argv)
+{
+    int n;
+    float a, b, v = 0.0;
+    printf("请输入定积分区间范围，以及子区间的个数(逗号分隔)：\n");
+    scanf("%f,%f,%d", &a, &b, &n);
+    printf("请选择函数你想计算定积分的函数(1表示func_1，2表示func_2)：");
+    scanf("%d", &fn);
+    switch (fn)
+    {
+        case Func_1: v = collect(a, b, n, func_1); break;
+        case Func_2: v = collect(a, b, n, func_2); break;
+        default: break;
+    }
+    printf("------------------------------------------------------------\n");
+    printf("区间[%.2f, %.2f]，划分%d个子区间，函数func_%d的定积分为%.2f\n", a, b, n, fn, v);
+    return 0;
+}
+
+float collect(float s, float t, int n, float (*p)(float x))
+{
+    int i;
+    float f, h, x, y1, y2, area;
+    f = 0.0;
+    h = (t - s) / n;
+    x = s;
+    y1 = (*p)(x);
+    for (i = 1; i <= n; ++i)
+    {
+        x = x + h;
+        y2 = (*p)(x);
+        area = (y1 + y2) * h / 2;
+        y1 = y2;
+        f += area;
+    }
+    return (f);
+}
+
+float func_1(float x)
+{
+    float fx;
+    fx = exp(-x);
+    return (fx);
+}
+
+float func_2(float x)
+{
+    float fx;
+    fx = x * sqrt(1 + cos(2 * x));
+    return (fx);
+}
 ```
 
 ## 选项
 ### A
 ```c
+#include <stdio.h>
+
+enum func_name {Func_1 = 1, Func_2};
+enum func_name fn;
+
+float collect(float s, float t, int m, float (*p)(float x));
+float func_1(float x);
+float func_2(float x);
+
+int main(int argc, char** argv)
+{
+    int n;
+    float a, b, v = 0.0;
+    printf("请输入定积分区间范围，以及子区间的个数(逗号分隔)：\n");
+    scanf("%f,%f,%d", &a, &b, &n);
+    printf("请选择函数你想计算定积分的函数(1表示func_1，2表示func_2)：");
+    scanf("%d", &fn);
+    switch (fn)
+    {
+        case Func_1: v = collect(a, b, n, func_1); break;
+        case Func_2: v = collect(a, b, n, func_2); break;
+        default: break;
+    }
+    printf("------------------------------------------------------------\n");
+    printf("区间[%.2f, %.2f]，划分%d个子区间，函数func_%d的定积分为%.2f\n", a, b, n, fn, v);
+    return 0;
+}
+
+float collect(float s, float t, int n, float (*p)(float x))
+{
+    int i;
+    float f, h, x, y1, y2, area;
+    f = 0.0;
+    h = (t - s) / n;
+    x = s;
+    y1 = (*p)(x);
+    for (i = 1; i <= n; ++i)
+    {
+        x = x + h;
+        y2 = (*p)(x);
+        area = (y1 + y2) * h / 2;
+        y1 = y2;
+        f += area;
+    }
+    return (f);
+}
+
+float func_1(float x)
+{
+    float fx;
+    fx = exp(-x);
+    return (fx);
+}
+
+float func_2(float x)
+{
+    float fx;
+    fx = x * sqrt(1 + cos(2 * x));
+    return (fx);
+}
 
 ```
 
 ### B
 ```c
+#include <stdio.h>
+#include <math.h>
+
+enum func_name {Func_1 = 1, Func_2};
+enum func_name fn;
+
+float collect(float s, float t, int m, float *p(float x));
+float func_1(float x);
+float func_2(float x);
+
+int main(int argc, char** argv)
+{
+    int n;
+    float a, b, v = 0.0;
+    printf("请输入定积分区间范围，以及子区间的个数(逗号分隔)：\n");
+    scanf("%f,%f,%d", &a, &b, &n);
+    printf("请选择函数你想计算定积分的函数(1表示func_1，2表示func_2)：");
+    scanf("%d", &fn);
+    switch (fn)
+    {
+        case Func_1: v = collect(a, b, n, func_1); break;
+        case Func_2: v = collect(a, b, n, func_2); break;
+        default: break;
+    }
+    printf("------------------------------------------------------------\n");
+    printf("区间[%.2f, %.2f]，划分%d个子区间，函数func_%d的定积分为%.2f\n", a, b, n, fn, v);
+    return 0;
+}
+
+float collect(float s, float t, int n, float *p(float x))
+{
+    int i;
+    float f, h, x, y1, y2, area;
+    f = 0.0;
+    h = (t - s) / n;
+    x = s;
+    y1 = *p(x);
+    for (i = 1; i <= n; ++i)
+    {
+        x = x + h;
+        y2 = *p(x);
+        area = (y1 + y2) * h / 2;
+        y1 = y2;
+        f += area;
+    }
+    return (f);
+}
+
+float func_1(float x)
+{
+    float fx;
+    fx = exp(-x);
+    return (fx);
+}
+
+float func_2(float x)
+{
+    float fx;
+    fx = x * sqrt(1 + cos(2 * x));
+    return (fx);
+}
 
 ```
 
 ### C
 ```c
+#include <stdio.h>
+#include <math.h>
+
+enum func_name {func_1 = 1, func_2};
+enum func_name fn;
+
+float collect(float s, float t, int m, float (*p)(float x));
+float func_1(float x);
+float func_2(float x);
+
+int main(int argc, char** argv)
+{
+    int n;
+    float a, b, v = 0.0;
+    printf("请输入定积分区间范围，以及子区间的个数(逗号分隔)：\n");
+    scanf("%f,%f,%d", &a, &b, &n);
+    printf("请选择函数你想计算定积分的函数(1表示func_1，2表示func_2)：");
+    scanf("%d", &fn);
+    switch (fn)
+    {
+        case func_1: v = collect(a, b, n, func_1); break;
+        case func_2: v = collect(a, b, n, func_2); break;
+        default: break;
+    }
+    printf("------------------------------------------------------------\n");
+    printf("区间[%.2f, %.2f]，划分%d个子区间，函数func_%d的定积分为%.2f\n", a, b, n, fn, v);
+    return 0;
+}
+
+float collect(float s, float t, int n, float (*p)(float x))
+{
+    int i;
+    float f, h, x, y1, y2, area;
+    f = 0.0;
+    h = (t - s) / n;
+    x = s;
+    y1 = (*p)(x);
+    for (i = 1; i <= n; ++i)
+    {
+        x = x + h;
+        y2 = (*p)(x);
+        area = (y1 + y2) * h / 2;
+        y1 = y2;
+        f += area;
+    }
+    return (f);
+}
+
+float func_1(float x)
+{
+    return exp(-x);
+}
 
+float func_2(float x)
+{
+    return x * sqrt(1 + cos(2 * x));
+}
 ```

data/3.C语言高阶/7.标准函数库/2.通用工具库/qsort.c

+#include <stdio.h>
+#include <stdlib.h>
+#define ARR_LEN 10
+
+void fill_array(int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        array[i] = rand() % 100;
+}
+
+int compare(const void *p_1, const void *p_2)
+{
+    const int *a_1 = (const int *)p_1;
+    const int *a_2 = (const int *)p_2;
+    return *a_1 > *a_2 ? 1 : (*a_1 == *a_2 ? 0: -1);
+}
+
+void print_array(const int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        printf("%d ", array[i]);
+    printf("\n");
+}
+
+int main(int argc, char** argv)
+{
+    int array[ARR_LEN];
+    fill_array(array, ARR_LEN);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+    qsort(array, ARR_LEN, sizeof(int), compare);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+
+    return 0;
+}
\ No newline at end of file

data/3.C语言高阶/7.标准函数库/2.通用工具库/qsort.md

-# 
+# 数组元素排序
 
+利用rand()函数随机生成100以内的正整数，用于填充整数数组，并使用qsort()函数实现数组元素的升序排序。请选出正确答案。
 
 ## 答案
 ```c
+#include <stdio.h>
+#include <stdlib.h>
+#define ARR_LEN 10
 
+void fill_array(int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        array[i] = rand() % 100;
+}
+
+int compare(const void *p_1, const void *p_2)
+{
+    const int *a_1 = (const int *)p_1;
+    const int *a_2 = (const int *)p_2;
+    return *a_1 > *a_2 ? 1 : (*a_1 == *a_2 ? 0: -1);
+}
+
+void print_array(const int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        printf("%d ", array[i]);
+    printf("\n");
+}
+
+int main(int argc, char** argv)
+{
+    int array[ARR_LEN];
+    fill_array(array, ARR_LEN);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+    qsort(array, ARR_LEN, sizeof(int), compare);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+
+    return 0;
+}
 ```
 
 ## 选项
 ### A
 ```c
+#include <stdio.h>
+#include <stdlib.h>
+#define ARR_LEN 10
+
+void fill_array(int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        array[i] = rand() % 100;
+}
+
+int compare(const int *a_1, const int *a_2)
+{
+    return *a_1 > *a_2 ? 1 : (*a_1 == *a_2 ? 0: -1);
+}
+
+void print_array(const int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        printf("%d ", array[i]);
+    printf("\n");
+}
+
+int main(int argc, char** argv)
+{
+    int array[ARR_LEN];
+    fill_array(array, ARR_LEN);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+    qsort(array, ARR_LEN, sizeof(int), compare);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+
+    return 0;
+}
 
 ```
 
 ### B
 ```c
+#include <stdio.h>
+#include <stdlib.h>
+#define ARR_LEN 10
 
+void fill_array(int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        array[i] = rand() % 100;
+}
+
+int compare(const void *p_1, const void *p_2)
+{
+    const int *a_1 = (const int *)p_1;
+    const int *a_2 = (const int *)p_2;
+    return *a_1 < *a_2 ? 1 : (*a_1 == *a_2 ? 0: -1);
+}
+
+void print_array(const int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        printf("%d ", array[i]);
+    printf("\n");
+}
+
+int main(int argc, char** argv)
+{
+    int array[ARR_LEN];
+    fill_array(array, ARR_LEN);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+    qsort(array, ARR_LEN, sizeof(int), compare);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+
+    return 0;
+}
 ```
 
 ### C
 ```c
+#include <stdio.h>
+#include <stdlib.h>
+#define ARR_LEN 10
+
+void fill_array(int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        array[i] = rand();
+}
+
+int compare(const void *p_1, const void *p_2)
+{
+    const int *a_1 = (const int *)p_1;
+    const int *a_2 = (const int *)p_2;
+    return *a_1 < *a_2 ? 1 : (*a_1 == *a_2 ? 0: -1);
+}
+
+void print_array(const int array[], const int len)
+{
+    int i;
+    for (i = 0; i < len; ++i)
+        printf("%d ", array[i]);
+    printf("\n");
+}
+
+int main(int argc, char** argv)
+{
+    int array[ARR_LEN];
+    fill_array(array, ARR_LEN);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
+    qsort(array, ARR_LEN, sizeof(int), compare);
+    printf("排序前：\n");
+    print_array(array, ARR_LEN);
 
+    return 0;
+}
 ```

data/3.C语言高阶/7.标准函数库/3.断言库/assert.c

@@ -13,7 +13,7 @@ void *mem_cpy(void *dest, const void *src, size_t len)
     return dest;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int *dest = NULL;
     int *src = (int *)malloc(N * sizeof(int));

data/3.C语言高阶/7.标准函数库/3.断言库/assert.md

@@ -17,7 +17,7 @@ void *mem_cpy(void *dest, const void *src, size_t len)
     return dest;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int *dest = NULL;
     int *src = (int *)malloc(N * sizeof(int));
@@ -54,7 +54,7 @@ void *mem_cpy(void *dest, const void *src, size_t len)
     return dest;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int *dest = NULL;
     int *src = (int *)malloc(N * sizeof(int));
@@ -92,7 +92,7 @@ void *mem_cpy(void *dest, const void *src, size_t len)
     return dest;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int *dest = NULL;
     int *src = (int *)malloc(N * sizeof(int));
@@ -119,7 +119,7 @@ void *mem_cpy(void *dest, const void *src, size_t len)
     return dest;
 }
 
-int main()
+int main(int argc, char** argv)
 {
     int *dest = NULL;
     int *src = (int *)malloc(N * sizeof(int));