#include <stdio.h>

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

int main() {
	int lower, upper, step;
	float fahr, celsius;
	lower = 0;  /* lower limit of temperature table */
	upper = 300; /* upper limit */
	step = 20; /* step size */
	fahr = lower;

	while (fahr <= upper) {
		celsius = (5.0/9.0) * (fahr-32.0);
		printf("%4.0f %6.1f\n", fahr, celsius);
		fahr = fahr + step;
	}
}