The program uses the formula [ Celsius = (5/9) * (Fahrenheit - 32)] to print the following table of Fahrenheit temperatures and their centigrade or Celsius equivalents:

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

#include <stdio.h>

 

int main(void)

{

    int fahr, cels;

    int low, upper, step;

 

    low   = 0;

    upper = 300;

    step  = 20;

 

    fahr = low;

    while (fahr <= upper)

    {

        cels = (5.0/9.0) * (fahr - 32);

        printf("%d\t%d\n", fahr, cels);

        fahr += step;

    }

 

    getch();

    return 0;

}

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/* print Fahrenheit - Celsius table for fahr = 0, 20, ..., 300;floating-point version */
#include <stdio.h>

int main(void)
{
    float fahr, cels;
    int low, upper, step;
   
    low   = 0;
    upper = 300;
    step  = 20;
   
    fahr = low;
    while ( fahr <= upper)
    {
          cels = (5.0/9.0) * ( fahr - 32);
          printf("%3.0f   %.1f\n",fahr, cels);
          fahr = fahr + step;
    }
   
    getch();
    return 0;
}