#include <stdio.h>

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

void
temp()
{
	float fahr, cel;

	printf("Fahrenheit-Celsius table\n");
	for (fahr = UPPER; fahr >= LOWER; fahr -= STEP) {
		cel = (5.0 / 9.0) * (fahr - 32.0);
		/* 3 and 6 characters wide with 1 digit after the dot */
		printf("%3.0f %6.1f\n", fahr, cel);
	}

	printf("\nCelsius-Fahrenheit table\n");
	for (cel = LOWER; cel <= UPPER; cel += STEP) {
		fahr = 9.0 / 5.0 * cel + 32.0;
		printf("%3.0f %6.0f\n", cel, fahr);
	}
}

int
main()
{
	temp();
	return 0;
}