#include <stdio.h>
/* print Fahrenheit-Celsius table
   for fahr = 0, 20, ..., 300 */

main()
{
  int celsius, fahr;
  int lower, upper, step;

  lower = 0;     /* lower limit of temperature table */
  upper = 300;   /* upper limit */
  step = 20;     /* step size */

  printf("Celsius-Fahrenheit table\n");

  celsius = lower;
    while (celsius <= upper) {
      fahr = ( 9 * celsius / 5) + 32 ;
      printf("%d\t%d\n", celsius, fahr);
      celsius = celsius + step;
    }
}

/* celsius = 5 * (fahr-32) / 9 */