输入某年某月（包括闰年），编程输出该年的该月拥有的天数

#include<stdio.h>
#define MONTHS 12
int main(){
int days[2][MONTHS]={{31,28,31,30,31,30,31,31,30,31,30,31},
{31,29,31,30,31,30,31,31,30,31,30,31}};
int year,month;
do{
printf("Input year,month:");
scanf("%d,%d",&year,&month);
}while(month<1||month>12);
if(((year%4==0)&&(year%100 !=0))||(year%400==0))
printf("The number of days is %d\n",days[1][month-1]);
else
printf("The number of days is %d\n",days[0][month-1]);

return 0;
}