/r/dailyprogrammer #376

main.c

#include<stdio.h>

int leaps(int from, int to)
{
	int count(0);

	for (; from < to; from++) {
		if ((from % 100 != 0 || (from % 900 == 200 || from % 900 == 600)) && from % 4 == 0)
			count++;
	}

	printf("%d -> %d => %d\n", from, to, count);
	return count;
}

int main(int argc, char const *argv[])
{
	leaps(2016, 2017);
	leaps(2019, 2020);
	leaps(1900, 1901);
	leaps(2000, 2001);
	leaps(2800, 2801);
	leaps(123456, 123456);
	leaps(1234, 5678);
	leaps(123456, 7891011);

	return 0;
}