Exercise 1-15. Rewrite the temperature conversion program of Section 1.2 to use a function for conversion.

/* Exercise 1-15. Rewrite the temperature conversion program of Section 1.2 to use a function for conversion.*/

#include <stdio.h>

#define START 0
#define END 300
#define STEP 20

int fah_to_cel(int fah);

int main()
{
    int i;
    int temperature;

    printf("%s\n", "----------------------------------------");
    printf("Temperature Conversion from F to C\n");
    printf("%s\n", "----------------------------------------");
    printf("%3s\t%6s\n", "F", "C");
    printf("%s\n", "----------------------------------------");

    for(i = START; i <= END; i = i + STEP)
    {
        temperature = fah_to_cel(i);
        printf("%3d\t%6d\n", i, temperature);
    }
    return 0;
}

int fah_to_cel(int fah)
{
    return (5 * (fah - 32) / 9);
}