View Code of Problem 56

#include<stdio.h>
#include<math.h>
int main(){
	int s1,f1,m1;
	int s2,f2,m2;
	int s,f,m;
	scanf("%d:%d:%d",&s1,&f1,&m1);
	scanf("%d:%d:%d",&s2,&f2,&m2);
	int sum1=s1*60*60+f1*60+m1;
	int sum2=s2*60*60+f2*60+m2;
	int sum=fabs(sum1-sum2);
	s=sum/60/60;
	f=(sum-s*60*60)/60;
	m=sum-s*60*60-f*60;
	printf("%d:%02d:%02d",s,f,m);
	
	
	return 0;
}