#include <stdio.h>

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

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

        lower = 0;      /* lower limit of temperature table */
        upper = 300;    /* upper limi */
        step  = 20;     /* step size */

        fahr = lower;
        while (fahr <= upper) {
            celsius = 5 * (fahr-32) / 9;
            printf ("%3d\t%6d\n", fahr, celsius);
            fahr = fahr + step;

        }
}