View Code of Problem 56

#include<stdio.h>
int main()
{
	int h1,h2,m1,m2,s1,s2;
	int t1=0,t2=0;
	scanf("%d:%d:%d",&h1,&m1,&s1);
	scanf("%d:%d:%d",&h2,&m2,&s2);
	
	t1=h1*3600+m1*60+s1;
	t2=h2*3600+m2*60+s2;
	
	int del;
	if(t1>t2)
		del=t1-t2;
	else
		del=t2-t1;
	int h,m,s;
	h=del/3600;
	m=(del%3600)/60;
	s=(del%3600%60);
	printf("%d:%02d:%02d",h,m,s);                                                                                                                                                                                                                               
	
	
	
	return 0;
}