题解 | #获得月份天数#

#include<stdio.h>
int isprime(int year)
{
    if(year%4==0&&year%100!=0||year%400==0)
    return 1;
    else
     return 0;;
}
int days(int year, int month)
{
    int arr[12]={31,28,31,30,31,30,31,31,30,31,30,31};
    if(isprime(year))
     arr[1]=29;
     return arr[month-1];
}
int main()
{
    int year=0;
    int month=0;
    while( scanf("%d%d",&year,&month)!=EOF)
    {
         printf("%d\n",days(year,month));
    }
   
   
    return 0;
}