deque get_allocator in C++ STL

// CPP program to illustrate
// deque get_allocator()
#include <bits/stdc++.h>
using namespace std;

int main()
{

    //'de' is object of 'deque'
    deque<int> de;

    //'allocator_type' is inherit in 'deque'
    //'d' is object of 'allocator_type'
    deque<int>::allocator_type d = de.get_allocator();

    // Comparing the Allocator with Pair<int, int>
    cout << "Is allocator Pair<int, int> : "
         << boolalpha
         << (d == allocator<pair<int, int> >());

    return 0;
}

// CPP program to illustrate
// deque get_allocator()
#include <bits/stdc++.h>
using namespace std;

int main(void)
{

    // Creating a container of type deque
    deque<int> de;

    // creating a pointer of type int
    int* array;

    // creating array using mylist get_allocator
    array = de.get_allocator().allocate(3);

    // inserting some data into array
    for (int i = 0; i < 3; i++)
        array[i] = i;

    // printing details of array
    for (int i = 0; i < 3; i++)
        cout << array[i] << " ";

    return 0;
}