View Code of Problem 56

#include <stdio.h>
#include <math.h>
int main()
{
	int s1,f1,m1,s2,f2,m2,n,n1,n2;
	int s,f,m;
	scanf("%d:%d:%d",&s1,&f1,&m1);
	scanf("%d:%d:%d",&s2,&f2,&m2);
	n1=s1*3600+f1*60+m1;
	n2=s2*3600+f2*60+m2;
	n=fabs(n1-n2);
	s=n/3600;
	f=(n-s*3600) /60;
	m=n-s*3600-f*60;
	printf("%d:%d:%d",s,f,m);
	return 0;
	
	
}