144.json

{
   "question_id": 1081343,
   "question_title": "编写计算组合数的程序?",
   "question_content": "1.编写计算组合数的程序。\n\n问题分析：\n\n（1）组合数的计算公式为：\n\n     \n\n（2）此公式中用到3次阶乘的计算，所以可以编写一个求阶层函数fact（x）。\n\n（3）函数fact（x）的功能为计算整数x的阶层。\n\n要求：上传运行结果截图时，输入n的值为10，m的值为4。程序运行结果参考下图：![图片说明](https://img-ask.csdn.net/upload/202006/07/1591491052_938571.png)",
   "difficulty": "简单",
   "answer_id": 1287002,
   "answer_content": "\n```\n#include <stdio.h>\nint fact(int n)\n{\nint r = 1;\nfor (int i = 1; i <= n; i++) r *= i;\nreturn r;\n}\nint main()\n{\nint m, n;\nscanf(\"%d%d\", &m, &n);\nint c = fact(n) / (fact(m) * fact(n - m));\nprintf(\"c=%d\", c);\nreturn 0;\n}\n```\n# 问题解决的话，请点下采纳",
   "tag_name": "c语言",
   "cpp": "#include <stdio.h>\nint fact(int n)\n{\nint r = 1;\nfor (int i = 1; i <= n; i++) r *= i;\nreturn r;\n}\nint main()\n{\nint m, n;\nscanf(\"%d%d\", &m, &n);\nint c = fact(n) / (fact(m) * fact(n - m));\nprintf(\"c=%d\", c);\nreturn 0;\n}",
   "topic_link": "https://bbs.csdn.net/topics/600469869",
   "status": 0,
   "keywords": "算法中阶,摊还分析,聚合分析,高级设计和分析技术",
   "license": "csdn.net",
   "notebook": {
      "cpp": "https://codechina.csdn.net/csdn/csdn-daily-code/-/jupyter/master/data/notebook/answer/ipynb/cpp/144.ipynb?type=file"
   }
}