View Code of Problem 56

#include<stdio.h>
#include<math.h>
int main()
{
	int h[2],m[2],s[2];
	for (int i = 0; i < 2; i++)
	{
		scanf("%d:%d:%d", &h[i], &m[i], &s[i]);
	}
	int sum1, sum2;
	int sum;
	sum1 = h[0] * 3600 + m[0] * 60 + s[0];
	sum2 = h[1] * 3600 + m[1] * 60 + s[1];
	sum = fabs(sum1 - sum2);
	printf("%d:%d:%d", sum / 3600, sum % 3600 / 60, sum % 3600 % 60);
	return 0;
}