윤년구하기 -서준영

#include <stdio.h> int main() {  int year = 0;  while(1)  {   printf ("please enter any year (quit -0): \n");   scanf ("%d", &year);   if(year == -0)   {    break;   }   if ((year%4 == 0 && year%100 !=0 )|| year%400 == 0)   {    printf ("%5d is leap year \n", year);   }     else   {    printf ("%5d is not leap year \n", year);   }  }  return 0; }