shiyan2

#include <stdio.h>
int main(){
 int year,days=0;
 printf("input the year:");
 scanf("%d",&year);
 if(year%4!=0){
  days=28;
 } else if(year%100!=0){
   days=29;
 } else if(year%400!=0){
    days=28;
 } else{
  days=29;
 }
 printf("year:%d,month:2,days:%d",year,days);
return 0;
}