1 #include <stdio.h>
2 
3 /* print Fahrenheit-Celsius table
4 	for fahr = 0, 20, ..., 300 */
5 main() {
6 	int fahr, celsius;
7 	int lower, upper, step;
8 
9 	lower = 0;		/* lower limit of temperature table */
10 	upper = 300;	/* upper limit */
11 	step = 20;		/* step size */
12 
13 	fahr = lower;
14 	while (fahr <= upper) {
15 		celsius = 5 * (fahr-32) / 9;
16 		printf("%d\t%d\n", fahr, celsius);
17 		fahr = fahr + step;
18 	}
19 }