题解 | #获得月份天数#

#include <stdio.h>
int main()
 {
    int year=0,month=0,date=0;
    while(scanf("%d %d",&year,&month)!=EOF)
    {
        if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
        {
            date=31;
        }
        else
        {
            date=30;
        }
        if(month==2)
        {
            if((year%4==0&&year%100!=0)||(year%400==0))
            {
                date=29;
            }
            else
            {
                date=28;
            }
        }
        
        printf("%d\n",date);
    }
    return 0;
}