Constructors

Creates a stream and associates it with a char array for output.

  ostrstream();
  ostrstream(char* s, int n, 
  ios_base::openmode mode = ios_base::out);

Remarks

The ostrstream class is overloaded for association with a pre allocated array or for dynamic allocation.

When using an ostrstream object the user must supply a null character for termination. When storing a string which is already null terminated that null terminator is stripped off to allow for appending.

Listing: Example of ostrstream usage.

#include <iostream>
#include <strstream>

int main()
{
   ostrstream out;
   out   << "Ask the teacher anything you want to know" << ends;
   istream inOut(out.rdbuf() );
   char c;
   while( inOut.get(c) ) cout.put(c); 
   return 0;
}

Result:

  Ask the teacher anything you want to know