fig19_11.cpp

经典vc教程的例子程序

// Fig. 19.11: fig19_11.cpp
// Using a dynamically allocated ostringstream object.
#include <iostream>
#include <string>
#include <sstream>
using namespace std;

main()
{
   ostringstream outputString;
   string s1( "Output of several data types " ),
          s2( "to an ostringstream object:" ),
          s3( "\n        double: " ),
          s4( "\n           int: " ),
          s5( "\naddress of int: " );
   double d = 123.4567;
   int i = 22;

   outputString << s1 << s2 << s3 << d << s4 << i << s5 << &i;
   cout << "outputString contains:\n" << outputString.str();

   outputString << "\nmore characters added";
   cout << "\n\nafter additional stream insertions,\n"
        << "outputString contains:\n" << outputString.str() 
        << endl;

   return 0;
}