#include <stdio.h>

/* print Fahrenheit-Celsius table 
    for fahr = 0, 20, ..., 300. */
main()
{
  float fahr, celsius;
  int lower, upper, step;

  lower = 0;    /* lower limit of temperature table */
  upper = 300;  /* upper limit of temperature table */
  step = 20;    /* step sizze */
  
  fahr = lower;
  while (fahr != upper) {
    celsius = 5 * (fahr-32) / 9;
    printf("%d\t%d\n", fahr, celsius);
    fahr = fahr + step;
  } /* while (fahr != upper) */
  
  return 0;
} /* main */