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Internet Message Format  |  1992-11-16  |  1.6 KB
  1. Xref: sparky comp.lang.c++:16359 comp.lang.c:16598
  2. Path: sparky!uunet!dtix!darwin.sura.net!Sirius.dfn.de!solaris.rz.tu-clausthal.de!news!andreas
  3. From: andreas@appel012.hydromech.uni-hannover.de (Andreas Dunker)
  4. Newsgroups: comp.lang.c++,comp.lang.c
  5. Subject: Re: Delete a dynamically allocated 2-dim'l array?
  6. Message-ID: <1992Nov16.142710.17104@newsserver.rrzn.uni-hannover.de>
  7. Date: 16 Nov 92 14:27:10 GMT
  8. References: <BxM7EC.BvE@math.uwaterloo.ca>
  9. Sender: news@newsserver.rrzn.uni-hannover.de (News Service)
  10. Organization: RRZN
  11. Lines: 36
  12. X-Newsreader: Tin 1.1 PL4
  13.  
  14. xjzhu@math.uwaterloo.ca (Xiaojun Zhu) writes:
  15. : 
  16. : Q: How to delete a dynamically allocated 2-dimensional array?
  17. :  
  18. : More specifically, I have:
  19. : 
  20. :    int row, column;
  21. :    int **array;
  22. : 
  23. [ deleted ]
  24. : 
  25. : Can I simply say:
  26. : 
  27. :    delete array;
  28. : 
  29.  
  30. You only have "free'd" the pointer to th array of pointers,
  31. but the memory is still allocated.
  32.  
  33. : Or should I say:
  34. : 
  35. :    for(i=row-1; i>=0; i--)
  36. :       delete array[i];
  37. :    delete array;
  38. : 
  39.  
  40. This is the right way.
  41.  
  42. ______________________________________________________________________________
  43.  
  44. Andreas Dunker                                Institut fuer Stroemungsmechanik
  45. andreas@appel012.hydromech.uni-hannover.de          und elektronisches Rechnen
  46.                                                                    im Bauwesen
  47.                                                          Universitaet Hannover
  48. 2B  |  ! 2B  (W. Shakespeare)                                     West Germany
  49. ______________________________________________________________________________
  50.