#include <stdio.h>
int main(void) {
// your code goes here
int year;
if(year%400==0)
printf("this is a leap year:%d",year
); else if(year%100==0)
printf("this is not a leapyear:%d",year
); else if(year%4==0)
printf("this is a leap year:%d",year
); else
printf("this is not a leap year:%d",year
); return 0;
}
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