73-union.c 1.1 KB

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  1. /* -*-comment-start: "//";comment-end:""-*-
  2. * GNU Mes --- Maxwell Equations of Software
  3. * Copyright © 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
  4. *
  5. * This file is part of GNU Mes.
  6. *
  7. * GNU Mes is free software; you can redistribute it and/or modify it
  8. * under the terms of the GNU General Public License as published by
  9. * the Free Software Foundation; either version 3 of the License, or (at
  10. * your option) any later version.
  11. *
  12. * GNU Mes is distributed in the hope that it will be useful, but
  13. * WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
  19. */
  20. #include <mes/lib.h>
  21. #include <stdio.h>
  22. typedef union foo
  23. {
  24. char c;
  25. int i;
  26. void *p;
  27. } foo;
  28. typedef union
  29. {
  30. char c;
  31. int i;
  32. void *p;
  33. } bar;
  34. int
  35. main ()
  36. {
  37. union foo f = { 48 };
  38. printf ("f.i=%d\n", f.i);
  39. printf ("f.c=%c\n", f.c);
  40. if (f.i != 48)
  41. return 1;
  42. if (f.c != '0')
  43. return 1;
  44. return 0;
  45. }