View Code of Problem 56

#include<stdio.h>
#include<math.h>
int main()
{
	int a,b,c,d,e,f,sum1,sum2,sum3;
	scanf("%d:%d:%d",&a,&b,&c);
	scanf("%d:%d:%d",&d,&e,&f);
	sum1=a*3600+b*60+c;
	sum2=d*3600+e*60+f;
	sum3=fabs(sum1-sum2);
	a=sum3/3600;
	b=sum3%3600/60;
	c=sum3%3600%60;
	printf("%d:%02d:%02d",a,b,c);
	return 0;
}