View Code of Problem 56

#include<stdio.h>
#include<math.h>
int main()
{
	int a[3],b[3];
	int sum1,sum2,sum;
	scanf("%d:%d:%d",&a[0],&a[1],&a[2]);
	scanf("%d:%d:%d",&b[0],&b[1],&b[2]);
	sum1=a[2]+a[1]*60+a[0]*3600;
	sum2=b[2]+b[1]*60+b[0]*3600;
	sum=fabs(sum1-sum2);
	printf("%d:%02d:%d",sum/3600,(sum/60)%60,sum%60);

}