#include <stdio.h>

/* print Fahrenheit-Celsius table for fahr = 0, 20, ..., 300; floating-point
 * version */
main()
{
    float fahr, celsius;
    float lower, upper, step;

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

    printf("Fahrenheit-Celsius\n");

    fahr = lower;
    while(fahr <= upper) {
        celsius = (5.0/9.0) * (fahr - 32.0);
        printf("%3.0f %6.0f\n", fahr, celsius);
        fahr = fahr + step;
    }
}
