Her er funktionen der ønskes programmeret sammen med den oprindelige funktion og main funktionen#include <stdio.h>
#include <stdlib.h>
int isLeapYear1(int year);
int isLeapYear2(int year);
int main(void) {
int y;
for(y = 1900; y < 2100; y++)
printf("Year: %d: %d %d\n", y, isLeapYear1(y), isLeapYear2(y));
return 0;
}
int isLeapYear1(int year){
int res;
if (year % 400 == 0)
res = 1;
else if (year % 100 == 0)
res = 0;
else if (year % 4 == 0)
res = 1;
else res = 0;
return res;
}
int isLeapYear2(int year){
return (year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0));
}