/* open_memstream example. Copyright (C) 1991-2016 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, if not, see . */ #include int main (void) { char *bp; size_t size; FILE *stream; stream = open_memstream (&bp, &size); fprintf (stream, "hello"); fflush (stream); printf ("buf = `%s', size = %d\n", bp, size); fprintf (stream, ", world"); fclose (stream); printf ("buf = `%s', size = %d\n", bp, size); return 0; }