Mega Code Archive
Test for leap year
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#include <stdio.h>
/* `1' == leap year, `0' != leap year */
int is_leap_year(int year);
int main(void) {
int years[4] = {2000, 2004, 2008, 2012};
int i = 0;
for(i = 0; i < 4; i++) {
if(is_leap_year(years[i]) == 1)
printf("%d is a leap year\n", years[i]);
else
printf("%d is not a leap year\n", years[i]);
}
return 0;
}
int is_leap_year(int year) {
/*
// leap year:
// is divisable by 4 and not by 100
// is divisable by 400
*/
if((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
return 1; /* leap */
else
return 0; /* no leap */
}
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