KB158202 - How to use the string::operator << Standard Template Library (STL) function in Visual C++

MORE INFORMATION

Required Header

   <string>

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.
////////////////////////////////////////////////////////////////////// 

#pragma warning(disable:4786)

#include <string>
#include <iostream>
using namespace std;

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

void main()

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

}

Program Output is:

Hello!  This is the insertion operator.

REFERENCES

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