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\n",a,b,c);
  return 0;
}