#include <iostream>
using namespace std;
#include "prompt.h"


// a few attempts to swap two things
// rcd@cs.duke.edu

void BadSwap (int a, int b)
{
   int temp = a;
   a = b;
   b = temp;
}


void Swap (int & a, int & b)
{
   int temp = a;
   a = b;
   b = temp;
}


int main ()
{
   int num1 = PromptRange("Enter a number ", 1, 100);
   int num2 = PromptRange("Enter another number ", -100, -1);

   cout << "Your numbers were: " << num1 << " and " << num2 << endl;
   BadSwap(num1, num2);
   cout << "Your numbers are: " << num1 << " and " << num2 << endl;
   Swap(num1, num2);
   cout << "Your numbers are: " << num1 << " and " << num2 << endl;

   return 0;
}