Pointer Arithmetic In C

by

Like the ++ increment operator, the - subtraction operator with pointers also takes into account the size of the objects being pointed to. Specifically, the result returned is the number of bytes difference in the pointer values divided by the size of the pointed-to object (12, in your example). So the difference is 12 bytes, divided by size 12, or 1.

More Related Contents:

  1. With arrays, why is it the case that a[5] == 5[a]?
  2. Pointer Arithmetic [closed]
  3. What is the result of NULL + int?
  4. Pointer/Address difference [duplicate]
  5. Order of operations for dereference and bracket-ref in C
  6. What is the output of the following code in C? [closed]
  7. Incorrect result in c code
  8. pointer to string concept in c [closed]
  9. Pointer manipulation inside function
  10. Changing address contained by pointer using function
  11. Why is the asterisk before the variable name, rather than after the type?
  12. What’s the difference between a VLA and dynamic memory allocation via malloc?
  13. Pointer to pointer of structs indexing out of bounds(?) when I try to index anything other than zero
  14. Should I use char** argv or char* argv[]?
  15. How to use pointer expressions to access elements of a two-dimensional array in C?
  16. Addresses of two char pointers to different string literals are same
  17. C typedef of pointer to structure
  18. Pointers – Difference between Array and Pointer
  19. Are “malloc(sizeof(struct a *))” and “malloc(sizeof(struct a))” the same?
  20. C – SizeOf Pointers
  21. Swapping pointers in C (char, int)
  22. What is double star (eg. NSError **)?
  23. Where in memory are string literals ? stack / heap? [duplicate]
  24. How to include a dynamic array INSIDE a struct in C?
  25. Difference between *ptr[10] and (*ptr)[10]
  26. How are we able to access the pointer after deallocating the memory?
  27. Printing pointers in C
  28. lvalue required as increment operand
  29. pointer default value .?
  30. C pointer notation compared to array notation: When passing to function

Leave a Comment