View Code of Problem 56

#include<bits/stdc++.h>
using namespace std;
int main(){
	int h1,m1,s1;
	int h2,m2,s2;
	int h3,m3,s3;
	int sum1=0,sum2=0,sum3=0;
	scanf("%d:%d:%d",&h1,&m1,&s1);
	scanf("%d:%d:%d",&h2,&m2,&s2);
	sum1=h1*3600+m1*60+s1;
	sum2=h2*3600+m2*60+s2;
	sum3=abs(sum2-sum1);
	h3=sum3/3600;
	m3=sum3%3600/60;
	s3=sum3%60;
	printf("%d:%02d:%02d",h3,m3,s3);
	return 0;
}