View Code of Problem 56

#include<stdio.h>
#include<math.h>
void main(){
	int h1,m1,s1,h2,m2,s2,time1,time2,sub,h,m,s;
	scanf("%d:%d:%d",&h1,&m1,&s1);
	scanf("%d:%d:%d",&h2,&m2,&s2);
	time1=h1*3600+m1*60+s1;
	time2=h2*3600+m2*60+s2;
	sub=fabs(time1-time2);
	h=sub/3600;
	m=sub%3600/60;
	s=sub%3600%60;
	printf("%d:%02d:%02d",h,m,s);
}