/*
 * Program to demonstrate converting Fahrenheit to Celsius.
 * Output:  Some examples of converting Fahrenheit to Celsius.
 */
#include <stdio.h>

/* Convert Fahrenheit temperature f to Celsius and return */
double f_to_c(double f);

/* Convert Fahrenheit temperature f to Celsius and print */
void convert_and_print(double f);

/* Main program */
int main(void) {

	/* 
	 * in choosing input values here I tried for ones where I knew
	 * what the output should be
	 */
	convert_and_print(32);
	convert_and_print(212);
	convert_and_print(98.6);
	convert_and_print(-40);

	return 0;
}

double f_to_c(double f) {
	return (5.0/9) * (f - 32);
}

void convert_and_print(double f) {
	printf("%lf degrees Fahrenheit is %lf degrees Celsius\n", f, f_to_c(f));
}