重载等号运算符示范

CMakeLists.txt

@@ -3,4 +3,4 @@ project(CPP_11_HeavyLoad)
 
 set(CMAKE_CXX_STANDARD 11)
 
-add_executable(CPP_11_HeavyLoad main.cpp test.cpp test.h operatorDemo.cpp operatorDemo.h minusOperator.cpp minusOperator.h relationOperator.cpp relationOperator.h outAndInOperator.cpp outAndInOperator.h PlusPlusOperator.cpp PlusPlusOperator.h)
+add_executable(CPP_11_HeavyLoad main.cpp test.cpp test.h operatorDemo.cpp operatorDemo.h minusOperator.cpp minusOperator.h relationOperator.cpp relationOperator.h outAndInOperator.cpp outAndInOperator.h PlusPlusOperator.cpp PlusPlusOperator.h EqualOperator.cpp EqualOperator.h)

EqualOperator.cpp

+//
+// Created by 11010 on 2023/4/8.
+//
+
+#include "EqualOperator.h"
+
+//构造函数
+EqualOperator::EqualOperator(int l, int w) :len(l),width(w){
+
+}
+
+//重载等号运算符
+void EqualOperator::operator= (const EqualOperator &equalOperator) {
+len=equalOperator.len;
+width=equalOperator.width;
+}
+
+//打印消息
+void EqualOperator::print() {
+cout<<"len: "<<len<<", width: "<<width<<endl;
+}

EqualOperator.h

+//
+// Created by 11010 on 2023/4/8.
+//
+
+#ifndef CPP_11_HEAVYLOAD_EQUALOPERATOR_H
+#define CPP_11_HEAVYLOAD_EQUALOPERATOR_H
+#include <iostream>
+
+using namespace std;
+
+//重载赋值运算符： 其实与加号运算符原理一样
+class EqualOperator {
+public:
+    int len;
+    int width;
+
+    EqualOperator(int l,int w);
+    void operator= (const EqualOperator &equalOperator);
+    void print();
+};
+
+
+#endif //CPP_11_HEAVYLOAD_EQUALOPERATOR_H

main.cpp

@@ -6,6 +6,7 @@
 #include <string>
 #include "outAndInOperator.h"
 #include "PlusPlusOperator.h"
+#include "EqualOperator.h"
 
 using namespace std;
 
@@ -70,5 +71,16 @@ int main() {
     ++p2;
     p2.print();
 
+    cout << "============================================" << endl;
+  EqualOperator eq(10,10);
+  eq.print(); //打印原始值
+  EqualOperator eq2(30,30);
+  eq2.print(); //打印原始值
+  //使用重载等号函数，把eq2赋给eq
+  eq=eq2;
+  eq.print(); //打印改变后的值 ，结果为： len: 30, width: 30
+
+
+
     return 0;
 }