(How) can I count the items in an enum?

by

There’s not really a good way to do this, usually you see an extra item in the enum, i.e.

enum foobar {foo, bar, baz, quz, FOOBAR_NR_ITEMS};

So then you can do:

int fuz[FOOBAR_NR_ITEMS];

Still not very nice though.

But of course you do realize that just the number of items in an enum is not safe, given e.g.

enum foobar {foo, bar = 5, baz, quz = 20};

the number of items would be 4, but the integer values of the enum values would be way out of the array index range. Using enum values for array indexing is not safe, you should consider other options.

edit: as requested, made the special entry stick out more.

More Related Contents:

  1. C++ – enum vs. const vs. #define
  2. Enumerate over an enum in C++
  3. Creating a counter that stays synchronized across MPI processes
  4. C++ – how to find the length of an integer
  5. Do C++ enums Start at 0?
  6. How can I enumerate/list all installed applications in Windows XP?
  7. How do I prevent program from running BOTH an IF and ELSE statement with C++?
  8. What is a segmentation fault?
  9. Generate random numbers uniformly over an entire range
  10. How to print Unicode character in C++?
  11. C++ Member Initialization List
  12. How to hide a string in binary code?
  13. Best compiler warning level for C/C++ compilers? [closed]
  14. What’s the difference between “static” and “dynamic” schedule in OpenMP?
  15. How can I combine several C/C++ libraries into one?
  16. Multi-threading benchmarking issues
  17. How to get the number of characters in a std::string?
  18. Mixing Objective-C and C++
  19. Get function pointer from std::function when using std::bind
  20. Static analysis tool to detect ABI breaks in C++ [closed]
  21. How to downsize std::vector?
  22. Using export keyword with templates
  23. What is the difference between the /Ox and /O2 compiler options?
  24. How to load a bmp on GLUT to use it as a texture?
  25. Can undefined behavior erase the hard drive?
  26. Eclipse CDT: Unresolved inclusion of stl header
  27. C++ How to compile dll in a .exe
  28. Do you know tool building tree of include files in project\file?
  29. Output Unicode strings in Windows console
  30. Why is the != operator not allowed with OpenMP?

Leave a Comment