View Code of Problem 56

#include<stdio.h>
#include<math.h>
int main()
{
	int h,m,s;
	int sum1,sum2;
	scanf("%d:%d:%d",&h,&m,&s);
    sum1=h*3600+m*60+s;
    scanf("%d:%d:%d",&h,&m,&s);
    sum2=h*3600+m*60+s;
    sum1=fabs(sum1-sum2);
	h=sum1/3600;
	m=sum1%3600/60;
	s=sum1%60;
	printf("%d:%02d:%02d\n",h,m,s);
	return 0;
}