题解 | #获得月份天数#

#include <stdio.h>

int main() {
     int days[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
    int year=0;
    int m=0;
    while ( scanf("%d %d",&year,&m)==2) {
     int day=days[m];
    if((m==2)&&(((year%4==0)&&(year%100!=0))||(year%400==0)))
    {
        day++;
    }
    
    printf("%d\n",day);
    }
   
   
   
    return 0;
}