INFO: STL Sample for deque::push_back and deque::pop_back Functions

ID: Q156759

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::push_back and deque::pop_back STL functions in Visual C++.

MORE INFORMATION

Required Header


   <deque>

Prototype


   void push_back(const T& x);
   void pop_back();

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 push_back function inserts an element with value x at the end of the container deque. The pop_back function removes the last element of the container deque, which must be non-empty.

Sample Code


////////////////////////////////////////////////////////////////////// 
// 
// Compile options needed: -GX
// 
// deque.cpp :
// 
// Functions:
// 
//    deque::push_back
// 
//    deque::pop_back
// 
// 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 printcontents (INTDEQUE  deque);

void main()

{

    INTDEQUE  dequetest;

    dequetest.push_back(1);
    dequetest.push_back(2);
    dequetest.push_back(3);
    printcontents (dequetest);
    dequetest.pop_back();
    printcontents (dequetest);
    dequetest.pop_back();
    printcontents (dequetest);

   }

   //function to print the contents of deque
   void printcontents (INTDEQUE  deque)
   {
       INTDEQUE::iterator pdeque;

       cout <<"The output is:"<<endl;

           for(pdeque = deque.begin();
           pdeque != deque.end();
           pdeque++)
       {
           cout << *pdeque <<endl ;
       }

   }

Program output is:


The output is:
1
2
3
The output is:
1
2
The output is:
1

REFERENCES

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

Additional query words: STL STLSample push_back pop_back deque

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