View Code of Problem 56

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