// Fig. 18.11: Fig18_11.cpp
// Using a dynamically allocated ostringstream object.
#include <iostream>
#include <string>
#include <sstream> // header for string stream processing
using namespace std;

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 ostringstream outputString         
   outputString << string1 << string2 << string3 << double1  
      << string4 << integer << string5 << &integer;

   // call str to obtain string contents of the ostringstream
   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;
} // end main

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