fig15_11.cpp

《c＋＋大学教程》源码

// Fig. 16.11: fig16_11.cpp
// Using a dynamically allocated ostringstream object.
#include <iostream>

using std::cout;
using std::endl;

#include <string>

using std::string;

#include <sstream>

using std::ostringstream;

int main()
{
   ostringstream outputString;  // create ostringstream instance

   string string1( "Output of several data types " );
   string string2( "to an ostringstream object:" );
   string string3( "\n        double: " );
   string string4( "\n           int: " );
   string string5( "\naddress of int: " );

   double double1 = 123.4567;
   int integer = 22;

   // output strings, double and int to outputString
   outputString << string1 << string2 << string3 << double1 
                << string4 << integer << string5 << &integer;

   // call str to output contents
   cout << "outputString contains:\n" << outputString.str();

   // add additional characters and call str to output string
   outputString << "\nmore characters added";
   cout << "\n\nafter additional stream insertions,\n"
        << "outputString contains:\n" << outputString.str() 
        << endl;

   return 0;

}  // end main

/**************************************************************************
 * (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice      *
 * Hall. All Rights Reserved.                                             *
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