Microsoft KB Archive/158204

= INFO: STL Sample for the string::operator>> Function =

Article ID: 158204

Article Last Modified on 12/1/2003

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APPLIES TO

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

 Microsoft Visual C++ 4.2 Professional Edition

 Microsoft Visual C++ .NET 2002 Standard Edition  Microsoft Visual C++ .NET 2003 Standard Edition</li></ul>

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This article was previously published under Q158204

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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_istream<E, TYPE>& operator>>(basic_istream<E, TYPE>& InStream,             basic_string<E, TYPE, A>& String); 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 populate a string with the contents of an input stream.

Sample Code
////////////////////////////////////////////////////////////////////// // // Compile options needed: /GX // // StringExtract.cpp : Illustrates how to use the operator>> to extract //                    a string from an input stream, populating a string //                    variable with the contents. // // Functions: // //   operator>>  Extracts a string from an input stream. // // Written by Derek Jamison // of Microsoft Product Support Services, // Copyright (c) 1996 Microsoft Corporation. All rights reserved. //////////////////////////////////////////////////////////////////////


 * 1) pragma warning(disable:4786)
 * 2) include
 * 3) 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 s1; cout << "Enter a word: "; cin >> s1; cout << endl << "You entered: " << s1; } Program Output is:

'''Enter a word: Sample

You entered: Sample'''

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