#include <stdio.h>

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

  lower = 0;     /* lower limit of temperature table */
  upper = 300;   /* upper limit */
  step = 50;     /* step size */

  fahr = lower;
  while (fahr <= upper) {
    celsius = (5.0/9.0)*(fahr - 32.0);
    printf("%1.0f %1.1f\n", fahr, celsius);
    fahr = fahr + step;
  }
}