INFO: STL Sample for deque::begin and deque::end Functions

ID: Q156591

The information in this article applies to:

The Standard C++ Library, used with:
- Microsoft Visual C++, 32-bit Editions, versions 4.2, 5.0, 6.0

SUMMARY

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

MORE INFORMATION

Required Header


   < deque>

Prototype


   const_iterator begin() const;
   iterator begin();

   const_iterator end() const;
   iterator end();

NOTE: The class/parameter names in the prototype may 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()
// 
// Written by Bobby Mattappally
// of Microsoft Product Support Services,
// Copyright (c) 1996 Microsoft Corporation. All rights reserved.
////////////////////////////////////////////////////////////////////// 

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

#if _MSC_VER > 1020   // if VC++ version is > 4.2
   using namespace std;  // std c++ libs implemented in std
   #endif

typedef deque<int, allocator<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

REFERENCES

Visual C++ Books On Line: Visual C++ Books:C/C++:Standard C++ Library Reference.

Additional query words: STL STLSample begin end iterator

Keywords : kbcode kbVC420 kbVC500 kbVC600 kbDSupport STLIss
Version : winnt:4.2,5.0,6.0
Platform : winnt
Issue type : kbinfo