Hello everyone,

Auto_ptr is convenient because of it saves our work and provides a
framework to auto-management life cycle to reduce potential resource
leak.

But why do we sometimes need to call release method on auto_ptr to go
back to the style of manual management? Remember, when we call release,
we need to delete the object instance manually later.

(here is a sample I modified from MSDN auto_ptr sample code)

Code:
--------------------
 
 // auto_ptr_release.cpp
 // compile with: /EHsc
 #include <memory>
 #include <iostream>
 #include <vector>
 using namespace std;
 
 class Int
 {
 public:
 Int( int i )
 {
 x = i;
 cout << "Constructing " << ( void* )this << " Value: " << x << endl;
 };
 ~Int( ) {
 cout << "Destructing " << ( void* )this << " Value: " << x << endl;
 };
 
 int x;
 
 };
 
 int main( )
 {
 auto_ptr<Int> pi ( new Int( 5 ) );
 Int* pi3 = pi.release ();
 delete pi3;
 }
 
--------------------

thanks in advance,
George