/*
 * question5.c
 * FINAL
 * BY: John Stile
 * Purpose: Given the following program, 
 *   write a simple function that takes an integer value as an argument.
 *   Regardless of what number is passed to the function,
 *   the funciton should:
 *      return 1 if the number is positive,
 *      return -1 if the number is negeitve.
 *      return 0 if number is zero.
 */

#include <stdio.h>

// prototypes
int number_tester( int );

//
int main(void)
{
  int number;
  char input[6];

  printf("\nInput an integer: ");
  gets(input);
  number=atoi(input);
  printf("Answer: %d\n", number_tester(number) );
  return 0;
}

// funcitons
int number_tester( int x )
{
    if ( x == 0 ) // if x contains zero, do block
    {
      return x;  // return 0 to calling function
    } else {
      return ( ( x<0) ? -1:1 ); // evaluate if num<0
                                // if true, return -1
                                // if flase, return 1 
    }
}