#include <stdio.h>

#define LOWER 0
#define UPPER 300
#define STEP  20

/* Print Fahrenheit-Celcius table
   for fahr = 0, 20, ..., 300 */
main() {
	float f, c; /* Fahrenheit and Celcuis Temperature */

	/* Heading */
	printf("Fahrenheit to Celcius\n");

	for (f = UPPER; f >= LOWER; f = f - STEP) {
		c = 5.0 / 9.0 * (f - 32);
		printf("%6.1f\t%6.1f\n", f, c);
	}
}