Advantage and disadvantages of #define vs. constants? [duplicate]

by

As 0A0D mentioned, there are #defines, enums, and const variables. It’s worth noting that const-qualified variables are not considered to be compile-time constants in C and therefore can’t be used in some circumstances (e.g. when declaring the size of an array).

enum constants are compile-time constants, however. For integral values, IMO it’s usually better to prefer enums over const variables over #define.

More Related Contents:

  1. Objective-C : BOOL vs bool
  2. How to split a string literal across multiple lines in C / Objective-C?
  3. Generate a random number within range? [duplicate]
  4. Mixing C functions in an Objective-C class
  5. Objective-C sample code for HMAC-SHA1 [closed]
  6. Variably modified array at file scope
  7. Checking the size of an object in Objective-C
  8. Limit a double to two decimal places [duplicate]
  9. Objective C: SHA1
  10. Is it ok to use “classic” malloc()/free() in Objective-C/iPhone apps?
  11. What is double star (eg. NSError **)?
  12. How can I avoid “duplicate symbol” errors in xcode with shared static libraries?
  13. Convert objective-c typedef to its string equivalent
  14. Why does NSError need double indirection? (pointer to a pointer)
  15. How can I break out of two nested for loops in Objective-C?
  16. C error: Exited with non-zero status
  17. Fixing code to mitigate against buffer overflows and invalid inputs
  18. What exactly is a C pointer if not a memory address?
  19. Reversing a string in C
  20. How to use netlink socket to communicate with a kernel module?
  21. Operator precedence (bitwise ‘&’ lower than ‘==’)
  22. GCC with -std=c99 complains about not knowing struct timespec
  23. How to use nan and inf in C?
  24. How to find the physical address of a variable from user-space in Linux?
  25. Why are malloc() and printf() said as non-reentrant?
  26. Segmentation Fault While Creating Large Arrays in C
  27. How to do an atomic increment and fetch in C?
  28. How do we check if a pointer is NULL pointer?
  29. Why can’t a modifiable lvalue have an array type?
  30. functions returning char pointer

Leave a Comment