View Code of Problem 56

#include<stdio.h>
#include<math.h>
int main(){
	int s1,f1,m1;
	int s2,f2,m2;
	scanf("%d:%d:%d",&s1,&f1,&m1);
	scanf("%d:%d:%d",&s2,&f2,&m2);
	long int sum1=s1*3600+f1*60+m1;
	long int sum2=s2*3600+f2*60+m2;
	long int sub=abs(sum1-sum2);
	
	int s=sub/3600;
	int f=(sub-s*3600)/60;
	int m=sub-3600*s-60*f;
	printf("%d:%.2d:%.2d",s,f,m);
	
	
	return 0;
}