2015C++第一周，任务七：输出年月的月份天数

任务七：输出年月的月份天数
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#include
"stdafx.h"
#include
<stdio.h>
#include<iostream>
#include<string.h>
using namespacestd;
int main()
{
int year, month, days, leap;
cout << "请输入年月："<< endl;
cin>> year >> month;
switch(month){//选择月份
case1:
case3:
case5:
case7:
case8:
case10:
case12:
days =31; break;
case4:
case6:
case9:
case11:
days =30; break;
case2:

if(year % 400 == 0)//年份能被400整除的是闰年
leap= 1;
elseif(year % 4 == 0 && year % 100 != 0)//年份能被4整除，但不能被100整除的是闰年
leap= 1;
else
leap= 0;
default:
cout<< "输入有误！" << endl;
if(leap) days = 29;
else days = 28;

}
cout<< year << "年"<< month <<
"月"<<
" 该月的天数为："<<days << endl;

return0;

}