判断第几天C++

解题思路:

注意事项:

参考代码:

#include<iostream>

using namespace std;

bool IsLeapYear(int year)//用来判断是否是闰年

{

     if (year % 4 == 0 && year % 100 != 0)

     return true;

     else if (year % 400 == 0)

     return true;

     else

     return false;

}

int main()

{

     int year, month, day;

     char one, two;

     int num = 0;

     while(cin >> year >> one >> month >> two >> day)题目中介绍到会有多组数据

     {

         if (IsLeapYear(year) == true)//闰年的情况

         {

             int x = 0;

             while (x != month)

             {

             if (x == 1 || x == 3 || x == 5 || x == 7 || x == 8 || x == 10)

             num += 31;

             else if (x == 2)

             num += 29;

             else if (x == 0)

             num += 0;

             else

             num += 30;

             x++;

             }

         }

         else//非闰年的情况

         {

             int x = 0;

             while (x != month)

             {

                 if (x == 1 || x == 3 || x == 5 || x == 7 || x == 8 || x == 10)

                 num += 31;

                 else if (x == 2)

                 num += 28;

                 else if (x == 0)

                 num += 0;

                 else

                 num += 30;

                 x++;

             }

     }

     cout << num + day << endl;

     }

     return 0;

    }