Microsoft KB Archive/158202

= How to use the string::operator << Standard Template Library (STL) function in Visual C++ =

Article ID: 158202

Article Last Modified on 8/11/2005

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APPLIES TO

 The Standard C++ Library, when used with:  Microsoft Visual C++ 4.2 Enterprise Edition

 Microsoft Visual C++ 5.0 Enterprise Edition

 Microsoft Visual C++ 6.0 Enterprise Edition

 Microsoft Visual C++ 4.2 Professional Edition</li></ul>

 Microsoft Visual C++ 5.0 Professional Edition</li></ul>

 Microsoft Visual C++ 6.0 Professional Edition</li></ul>

 Microsoft Visual C++ 6.0 Standard Edition</li></ul>

 Microsoft Visual C++ .NET 2002 Standard Edition</li></ul>

 Microsoft Visual C++ .NET 2003 Standard Edition</li></ul> </li></ul>

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This article was previously published under Q158202

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NOTE: Microsoft Visual C++ NET (2002) supported both the managed code model that is provided by the .NET Framework and the unmanaged native Windows code model. The information in this article applies to unmanaged Visual C++ code only.

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SUMMARY
The sample code below illustrates how to use the string::operator<< STL function in Visual C++.

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Prototype
template<class _E, class _TYPE, class _A> inline basic_ostream<_E, _TYPE>& operator<<( basic_ostream<_E, _TYPE>& OStream,

const basic_string<_E, _TYPE, _A>& XString); 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 operator<< is used to insert a string into an output stream.

Sample Code
////////////////////////////////////////////////////////////////////// // // Compile options needed: /GX // // StringInsertion.cpp : Illustrates how to use the insertion operator //                      (operator<<) to insert a string into an output //                      stream. // // Functions: // //   operator<<   Inserts a string into an output stream. // // Written by Derek Jamison // of Microsoft Product Support Services, // Copyright (c) 1996 Microsoft Corporation. All rights reserved. //////////////////////////////////////////////////////////////////////


 * 1) pragma warning(disable:4786)

using namespace std;
 * 1) include
 * 2) include

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

void main

{   string msg="Hello!  This is the insertion operator."; cout << msg << endl;

} Program Output is: Hello! This is the insertion operator.

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