/* Prints a fahrenheit to celsius conversion table */

#include <stdio.h>

int ftc(int temp) {

     return 5 * (temp-32) / 9;
}

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

     lower = 0;
     upper = 300;
     step = 20;

     fahr = lower;
     printf("Fahr\tCels\n");
     while (fahr <= upper) {
	  printf("%d\t%d\n", fahr, ftc(fahr));
	  fahr = fahr + step;
     }
}