天数判断
输入年月,求该月份的天数。
#include <iostream>
using namespace std;int main()
{
int a,b;
cin>>a>>b;
if((a%4==0&&a%100!=0)||(a%400==0))
if(b==2)
cout<<"29";
else if((b<=7&&b%2!=0)||(b>7&&b%2==0))
cout<<"31";
else cout<<"30";
else if(b==2)
cout<<"28";
else if((b<=7&&b%2!=0)||(b>7&&b%2==0))
cout<<"31";
else cout<<"30";
return 0;
}