/*
 * temperature_conversion_function.c
 *
 *  Rewrite the temperature conversion program to use a function.
 *  K&R Exercise 1.15
 */

#include <stdio.h>


#define LOWER   -100
#define UPPER   100
#define STEP    10


float celsius2fahrenheit(float celsius);


int
main()
{
        int celsius;
        float fahr;

        celsius = LOWER;
        while (celsius <= UPPER) {
            fahr = celsius2fahrenheit(celsius);
            printf("Celsius: %4d\tFahrenheit: %6.1f\n", celsius, fahr);
            celsius = celsius + STEP;
        }

        return 0;
}

float
celsius2fahrenheit(float celsius)
{
    return 9.0/5.0 * celsius + 32;
}