#include <stdio.h>
#include <math.h>

int main()
{
  double t, x, step;
  
  printf("C output\n");
  printf("Chapter 4\n");
  printf("Problem 3\n");
  
  // when x = y
  t = 5.0/16.0;
  // then
  x = 5.0 * t;
  step = ceil(12.0/8.0 * x);
  
  printf("Step = %10.8f\n",step);
}