/*
 * -----------------------------------------------------
 * CS2S03/SE2S03, October 2011
 * Assignment 3, Question 3
 * File: PE0510.cpp
 * -----------------------------------------------------
 * This program takes an integer and displays its string
 * representation.
 * Do not enter the most negative int.
 * -----------------------------------------------------
 */
 
#include "genlib.h"
#include "simpio.h"
#include <iostream>
 
/* Private function prototype */
string IntToString(int n);
 
/* Main program */
int main() {
    int n;
    cout << "Enter an integer to convert to a string: ";
    n = GetInteger();
    cout << "The string representation of " << n << " is: ";
    cout << IntToString(n) << endl;
    return 0;
}
 
/*
 * Function: IntToString
 * Usage: s = IntToString(n)
 * ----------------------------------------------------
 * This function takes an integer and returns it string
 * representation.
 * Bug: Do not use when n is the most negative int
 */
  
string IntToString(int n) {
	
    if (n < 0)
        return '-' + IntToString(-n);

    if (n < 10)
        return string("") + char(n + '0');
    else
        return IntToString(n / 10) + char(n % 10 + '0');
}