实验课2

#include "stdio.h"
int main(){
 char a,b,c,d,e;
 a=getchar();
 b=getchar();
 c=getchar();
 d=getchar();
 e=getchar();
 putchar(a);
 putchar(b);
 putchar(c);
 putchar(d);
 putchar(e);
 printf("\n");
 return 0;
}

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

 return 0; }