display | more...
The C++ STL (Standard Template Library) implementation of a generic smart pointer. Utilizes the C++ feature of a class destructor to the automatically free dynamically allocated memory of the object to which it references.

  class Foo
  {
  public:
     Foo(int val) : bar(val) {}
     int GetBar() const {return bar;}
  protected:
     int bar;
  };

  void print3()
  {
    //construct fooPtr with pointer to new Foo object   
    std::auto_ptr fooPtr = new Foo(3);
    
    //access referenced object as if fooPtr were a regular pointer
    cout << "bar = " << fooPtr->GetBar() << endl;

    //Foo object referenced by fooPtr is automatically freed as fooPtr goes out of scope
  }