#2

Main.cpp

// ISU laboratory session #9, exercise #2.

#include <iostream>  
#include "SmartString.hpp"  
using namespace std;  
int main ()  
{
  // Step 1: Scope #1
  {
    // Step 2
    SmartString ss1(new string("Hello world!"));
    
    // Print information (ss1: string and counter that ss1 points to)
    cout << endl << "[ss1]" << ss1;
    
    // Scope #2
    // After it, ss2 pops from the stack
    {
      // Step 3
      SmartString ss2(new string("Hej verden!"));
            
      // Print information (ss2: string and counter that ss2 points to)
      cout << endl << "[ss2]" << ss2 << endl;
      
      // Step 4
      ss2 = ss1;
      
      // Print information (ss2: string and counter that ss2 points to)
      cout << endl << "[ss2]" << ss2 << endl;
      
      // Scope #3
      // ss3 is removed from the stack
      {
	// Copy constructor called. Assigning str and counter to what ss1 points to
	SmartString ss3 = ss1;
	
	// Print ss3
	cout << endl << "[ss3]" << ss3;
	// The quantity of references to str should be 3
      }
      
      // Print ss2
      cout << endl << "[ss2]" << ss2;
      // The quantity of references to str should be 2      
    }
    
    // Print ss1
    cout << endl << "[ss1]" << ss1 << endl;
    // The quantity of references to str should be 1
  }   
}