strstream.cpp

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#include <iostream>    // for cout, ends
#include <strstream>   // for sstream
 
#include <examples.h>
 
 
int main ()
{
    // create a bi-directional strstream object 
    std::strstream inout;
 
    // write three complete lines of text to the stream
    inout << "  Dieses ist die Geschichte eines Mannes.\n"
          << "  C'est l'histoire d'un homme.\n"
          << "  This is the story of a man.\n"
          << std::ends;
 
    char line [80];
 
    // output the entire contents of the stream object to stdout
    std::cout << "Full text, " << inout.pcount ()
              << " characters:\n" << inout.str ();
 
    // unfreeze the streambuf so it cleans up its allocated memory 
    inout.freeze (false);
 
    // keep track of the number of characters extracted by getline
    std::streamsize gcount = 0;
 
    // extract lines from the stream, one at a time
    for (int i = 1; inout.getline (line, sizeof line); ++i) {
 
        // increment the number of extracted characters
        gcount += inout.gcount ();
 
        // write out the line number and its length
        std::cout << "\nLine " << i << ", " << inout.gcount ();
 
        if ('\0' == *line) {
            // incomplete line (missing newline character)
            std::cout << " character (no newline):\n"
                      << "  '\\0'\n";
        }
        else {
            // output the line to stdout
            std::cout << " characters:\n" << line;
        }
    }
 
    // write out the total number of extracted characters
    std::cout << "\nExtracted " << gcount << " characters.\n";
 
    return 0;
}