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allocator::pointer

A type that provides a pointer to the type of object managed by the allocator.

typedef value_type *pointer;

The pointer type describes an object ptr that can designate, through the expression *ptr, any object that an object of template class allocator can allocate.

// allocator_ptr.cpp
// compile with: /EHsc
#include <memory>
#include <iostream>
#include <vector>

using namespace std;

int main( ) 
{
   vector <int> v1;
   vector <int>::iterator v1Iter;
   vector <int>:: allocator_type v1Alloc;

   int i;
   for ( i = 1 ; i <= 7 ; i++ )
   {
      v1.push_back( 3 * i );
   }

   cout << "The original vector v1 is:\n ( " ;
   for ( v1Iter = v1.begin( ) ; v1Iter != v1.end( ) ; v1Iter++ )
      cout << *v1Iter << " ";
   cout << ")." << endl;

   allocator<int>::const_pointer v1Ptr;
   const int k = 12;
   v1Ptr = v1Alloc.address( k );

   cout << "The integer addressed by v1Ptr has a value of: "
        << "*v1Ptr = " << *v1Ptr << "." << endl;   
}
The original vector v1 is:
 ( 3 6 9 12 15 18 21 ).
The integer addressed by v1Ptr has a value of: *v1Ptr = 12.

Header: <memory>

Namespace: std

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