///////////////////////////////////////////////////////////////
//  basic0.cpp - declare, create and use references          //
//               and compare with pointers
//  ver 1                                                    //
//  Jim Fawcett, CSE687, S00                                 //
///////////////////////////////////////////////////////////////

#include <iostream>    // cout
#include <cstring>     // C style strings

//
//  Note:
//    & to the  left of an "=" is a reference
//    & to the right of an "=" is an address
//  Otherwise:
//    & in a declaration is a reference
//    & in an expression is an address
//

void main() {

  std::cout << "\n  Demonstrate pointers and references "
            << "\n =====================================\n";

// declare object, pointer to it, and use
  int x = 2;
  int *pInt = &x;

  std::cout << "\n  contents of location pointed to by pInt = "
       << (*pInt);

  *pInt = 3;
  std::cout << "\n  modified contents of location pointed to by pInt = "
       << (*pInt)
       << std::endl;

// declare reference and use it
  int &rInt = x;
  
  std::cout << "\n  contents of location referred to by rInt = "
            << rInt;

  rInt = 2;
  std::cout << "\n  modified contents of location referred to by rInt = "
            << rInt << std::endl;

  std::cout << "\n\n";
}