#include <stdio.h>

/* print farenheit-celsius table
 * for fahr = 0, 20, ..., 300 */

int main()
	{
	float fahr, celsius;
	float lower, upper, step;

	lower = 0; 	/* lower bound of temp scale*/
	upper = 300;	/* upper bound of temp scale*/
	step = 20;	/* step size between calculated conversions*/

	fahr = lower;


	printf("Temperature conversion table with 20-degree^f steps. \n");
	printf("%4s\t%6s\n", "DegF", "DegC");

	while (fahr <= upper)
		{
			celsius = (5.0/9.0) * (fahr-32);
			printf("%4.0f\t%6.1f\n", fahr, celsius);
			fahr = fahr + step;
		}
	return 0;
	}