deque::begin and deque::end (STL Sample)

The sample code below illustrates how to use the deque::begin and deque::end STL functions in Visual C++.

Required Header:
< deque>

Prototype:


const_iterator begin() const;
iterator begin();

const_iterator end() const;
iterator end();

Note: The class/parameter names in the prototype do not match the version in the header file. Some have been modified to improve readability.

Description:
The begin member function returns a random-access iterator that points at the first element of the sequence, or just beyond the end of an empty sequence. The end member function returns a random-access iterator that points just beyond the end of the sequence.

Sample Code:

//////////////////////////////////////////////////////////////////////
//
// Compile options needed: -GX
//
// deque.cpp :
//
// Functions:
//
//    begin()
//    end()
//////////////////////////////////////////////////////////////////////

/* Compile options needed:-GX
*/
#include <iostream>
#include <deque>

using namespace std;


typedef deque<int >  INTDEQUE;

void main()
{

    // Create A and fill it with elements 1,2,3,4 and 5
    // using push_back function

    INTDEQUE  A;
    A.push_back(1);
    A.push_back(2);
    A.push_back(3);
    A.push_back(4);
    A.push_back(5);

    // Print the contents of A using iterator
    // and functions begin() and end()

     INTDEQUE::iterator pi;

    for(pi= A.begin();  pi !=A.end(); pi++)
    {
        cout << *pi <<" " ;
    }
        cout<<endl;
}

Program Output is:

1 2 3 4 5