#include <stdio.h>

#define     LOWER   0       /* lower limit of table */
#define     UPPER   300     /* upper limit of table */
#define     STEP    20      /* increment size */

int main()
{
    float fahr, celsius, tModifier;

    fahr = LOWER;
    tModifier = (5.0/9.0);
    while (fahr <= UPPER) {
        celsius = tModifier * (fahr - 32.0);
        printf("%3.0f\t%5.1f\n", fahr, celsius);
        fahr = fahr + STEP;
    }
}