#include <stdio.h>

#define LOWER  0     /* lower limit of table */
#define UPPER  300   /* upper limit */
#define STEP   20    /* step size */

/* print Fahrenheit-Celsius table
   for fahr = 0, 20, ..., 300 */

int main()
{
  int fahr;
  for(fahr = LOWER; fahr <= UPPER; fahr = fahr + STEP)
    printf("%3d %6.1f\n", fahr, (5.0/9.0)*(fahr-32));
}