#include <stdio.h>
/* print Fahrenheit-Celcius table 
for fahr = 0, 20, ...., 300 */

int main() 
{
    /* int fahr, celsius; */ 
    float fahr, celsius; 
    int lower, upper, step; 
    
    lower = 0; 
    upper = 300; 
    step = 20; 
    
    fahr = lower; 
    while (fahr <= upper) 
        { celsius = 5 * (fahr-32) / 9; 
        /* printf("%d\t%d\n", fahr, celsius); */ 
        printf("%3.0f %6.1f\n", fahr, celsius); 
        fahr = fahr + step; 
        } 
}