/* File: c2ftable.c
 * This program illustrates the use of functions 
 * by generating  a table of Celsius to Fahrenheit
 * conversions.
 */

#include <stdio.h>
#include "genlib.h"

/* Constants
 * LowerLimit -- Starting temperature 
 * UpperLimit -- Final temperature 
 * StepSize   -- Step size
 */

#define LowerLimit   0
#define UpperLimit 100
#define StepSize     5

/* Function prototypes */
double CelsiusToFahrenheit(double c);

/* Main program */
main() {
   int c;

   printf("Celsius to Fahrenheit table.\n");
   printf("  C    F\n");

   for (c = LowerLimit; c <= UpperLimit; c += StepSize) {
      printf("%3d  %3g\n", c, CelsiusToFahrenheit(c));
   }
}

/* Function: CelsiusToFahrenheit
 * Usage: f = CelsiusToFahrenheit(c);
 *
 * Returns the Fahrenheit equivalent 
 * of the Celsius temperature c.
 */

double CelsiusToFahrenheit(double c) {

    return (9.0 / 5.0 * c + 32);
}