View Code of Problem 56

#include<stdio.h>
int main()
{
  int h1, h2, m1, m2, s1, s2, t1, t2, del;
  t1 = t2 = 0;
  scanf("%d:%d:%d",&h1, &m1, &s1);
  scanf("%d:%d:%d",&h2, &m2, &s2);
   t1 = h1 * 3600 + m1 * 60 + s1;
   t2 = h2 * 3600 + m2 * 60 + s2;
   if(t1 > t2)
 {
  del = t1 - t2;
  }
  else
 {
  del = t2 - t1;
 }
int a, b, c;
a = del / 3600;
b = del / 60 % 60;
c = del % 60;
printf("%d:%02d:%02d\n",a, b, c);
return 0;
}