What is the size of a pointer?

by

Function Pointers can have very different sizes, from 4 to 20 bytes on an x86 machine, depending on the compiler. So the answer is no – sizes can vary.

Another example: take an 8051 program. It has three memory ranges and thus has three different pointer sizes, from 8 bit, 16 bit, 24 bit, depending on where the target is located, even though the target’s size is always the same (e.g., char).

More Related Contents:

  1. Is the sizeof(some pointer) always equal to four?
  2. sizeof works unusual at c++ after array creation [duplicate]
  3. Matrix Printing using Pointers [closed]
  4. Why is sizeof giving incorrect number of bytes in C++?
  5. Passing a 2D array to a C++ function
  6. What exactly is nullptr?
  7. Testing pointers for validity (C/C++)
  8. Why does cout print char arrays differently from other arrays?
  9. Why aren’t pointers initialized with NULL by default?
  10. How do sizeof(arr) / sizeof(arr[0]) work?
  11. What is guaranteed about the size of a function pointer?
  12. How to create two classes in C++ which use each other as data?
  13. Why does cudaMalloc() use pointer to pointer?
  14. dereferencing the null pointer
  15. std::map, pointer to map key value, is this possible?
  16. Get pointer to object from pointer to some member
  17. Convert C++ function pointer to c function pointer
  18. Getting the size of a malloc only with the returned pointer
  19. How to allocate a 2D array of pointers in C++
  20. How to find the size of an array (from a pointer pointing to the first element array)?
  21. Character pointers and integer pointers (++)
  22. Is an iterator in C++ a pointer?
  23. std::unique_ptr with derived class
  24. Confusion about pointers and references in C++
  25. Static global variables in C++
  26. Where ampersand “&” can be put when passing argument by reference?
  27. What is the meaning of this star (*) symbol in C++? — Pointer to member
  28. non-const pointer argument to a const double pointer parameter
  29. Polymorphism & Pointers to arrays [duplicate]
  30. Does the standard mandate an lvalue-to-rvalue conversion of the pointer variable when applying indirection?

Leave a Comment