allocator::address
Finds the address of an object whose value is specified.
pointer address(
reference _Val
) const;
const_pointer address(
const_reference _Val
) const;
Parameters
- _Val
The const or nonconst value of the object whose address is being searched for.
Return Value
A const or nonconst pointer to the object found of, respectively, const or nonconst value.
Remarks
The member functions return the address of _Val, in the form that pointers must take for allocated elements.
Example
// allocator_address.cpp
// compile with: /EHsc
#include <memory>
#include <algorithm>
#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( 2 * 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 = 8;
v1Ptr = v1Alloc.address( *find(v1.begin( ), v1.end( ), k) );
// v1Ptr = v1Alloc.address( k );
cout << "The integer addressed by v1Ptr has a value of: "
<< "*v1Ptr = " << *v1Ptr << "." << endl;
}
The original vector v1 is: ( 2 4 6 8 10 12 14 ). The integer addressed by v1Ptr has a value of: *v1Ptr = 8.
Requirements
Header: <memory>
Namespace: std