Q156589

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Q156589: STL Sample for deque::insert Function

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Article: Q156589
Product(s): Microsoft C Compiler
Version(s): 4.2,5.0,6.0
Operating System(s): 
Keyword(s): kbcode kbVC420 kbVC500 kbVC600 kbDSupport
Last Modified: 26-MAR-2002

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The information in this article applies to:

- The Standard C++ Library, used with:
   - Microsoft Visual C++, 32-bit Enterprise Edition, versions 4.2, 5.0, 6.0 
   - Microsoft Visual C++, 32-bit Professional Edition, versions 4.2, 5.0, 6.0 
   - Microsoft Visual C++, 32-bit Learning Edition, version 6.0 
   - Microsoft Visual C++.NET (2002) 
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SUMMARY
=======

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

MORE INFORMATION
================

Required Header
---------------

     <deque>

Prototype
---------

     iterator insert(iterator iter, const T& x = T());
     void insert(iterator iter, size_type n, const T& x);
     void insert(iterator iter, const_iterator first,const_iterator last);

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
-----------

Each of these functions inserts a sequence specified by the remaining operands
after the element pointed to by iter in the container. The first member function
inserts a single element with value x and returns an iterator that points to the
newly inserted element. The second member function inserts a repetition of n
elements of value x. The third member function inserts the sequence [first,
last).

Sample Code
-----------

NOTE: In the first line of the sample code section, /GX is equivalent to /EHsc in
VC++ .NET and is set by default.

  ////////////////////////////////////////////////////////////////////// 
  // 
  // Compile options needed: -GX
  // 
  // deque.cpp :
  // 
  // Functions:
  // 
  //    insert
  //    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<char, allocator<char> >  CHARDEQUE;

  void print_contents (CHARDEQUE  deque);

  void main()

  {

      //create a with 3 A's
      CHARDEQUE  a(3,'A');

      //create b with 2 B's.
      CHARDEQUE  b(2,'B');

      //print out the contents
      print_contents (a);
      print_contents (b);

      //insert 'X' to the beginning of a
      a.insert(a.begin(),'X');
      print_contents (a);

      //insert 'Y' to the end of a
      a.insert(a.end(),'Y');
      print_contents (a);

      //inset 3 'Z's to one item before the end of a
      a.insert(a.end()-1,3,'Z');
      print_contents (a);

      //insert to the end of a from b
      a.insert(a.end(),b.begin(),b.end());
      print_contents (a);

  }

  //function to print the contents of deque
  void print_contents (CHARDEQUE  deque)

  {

      CHARDEQUE::iterator pdeque;

      cout <<"The output is: ";

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

  }

Program Output is:

The output is: A A A
The output is: B B
The output is: X A A A
The output is: X A A A Y
The output is: X A A A Z Z Z Y
The output is: X A A A Z Z Z Y B B

REFERENCES
==========

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

Additional query words: STL STLSample insert begin end

======================================================================
Keywords          : kbcode kbVC420 kbVC500 kbVC600 kbDSupport 
Technology        : kbVCsearch kbAudDeveloper kbVCNET kbVCLibrary
Version           : :4.2,5.0,6.0
Issue type        : kbinfo

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