View Code of Problem 56

#include<stdio.h>
#include<math.h>
int main(){
	int h,hh,m,mm,s,ss;
	int H,M,S;
	scanf("%d:%d:%d",&h,&m,&s);
	scanf("%d:%d:%d",&hh,&mm,&ss);
	int second1=h*60*60+m*60+s;
	int second2=hh*60*60+mm*60+ss;
	//int space=abs(second2-second1);
	int space;
	if(second1>=second2){
		space=second1-second2;
	}
	else
		space=second2-second1;
	S=space%60;
	M=space/60%60;
	H=space/3600%60;
	printf("%d:%02d:%02d",H,M,S);
}