1  /* open_memstream example.
       2     Copyright (C) 1991-2023 Free Software Foundation, Inc.
       3  
       4     This program is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU General Public License
       6     as published by the Free Software Foundation; either version 2
       7     of the License, or (at your option) any later version.
       8  
       9     This program is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12     GNU General Public License for more details.
      13  
      14     You should have received a copy of the GNU General Public License
      15     along with this program; if not, see <https://www.gnu.org/licenses/>.
      16  */
      17  
      18  #include <stdio.h>
      19  
      20  int
      21  main (void)
      22  {
      23    char *bp;
      24    size_t size;
      25    FILE *stream;
      26  
      27    stream = open_memstream (&bp, &size);
      28    fprintf (stream, "hello");
      29    fflush (stream);
      30    printf ("buf = `%s', size = %zu\n", bp, size);
      31    fprintf (stream, ", world");
      32    fclose (stream);
      33    printf ("buf = `%s', size = %zu\n", bp, size);
      34  
      35    return 0;
      36  }