returning a local variable from function in C [duplicate]

by

The issue here is that when you create the local variable it is allocated on the stack and is therefore unavailable once the function finishes execution (implementation varies here). The preferable way would be to use malloc() to reserve non-local memory. the danger here is that you have to deallocate (free()) everything you allocated using malloc(), and if you forget, you create a memory leak.

More Related Contents:

  1. What is the output of the following code in C? [closed]
  2. Incorrect result in c code
  3. whats the difference between dynamic memory allocation and normal memory allocation?
  4. pointer to string concept in c [closed]
  5. Pointer manipulation inside function
  6. Changing address contained by pointer using function
  7. C: differences between char pointer and array [duplicate]
  8. How does free know how much to free?
  9. “Pointer from integer/integer from pointer without a cast” issues
  10. Are there any platforms where pointers to different types have different sizes?
  11. What exactly is the array name in c?
  12. “Life-time” of a string literal in C
  13. Does free(ptr) where ptr is NULL corrupt memory?
  14. Returning string from C function
  15. Pointer to pointer of structs indexing out of bounds(?) when I try to index anything other than zero
  16. Should I use char** argv or char* argv[]?
  17. How to use pointer expressions to access elements of a two-dimensional array in C?
  18. Addresses of two char pointers to different string literals are same
  19. C typedef of pointer to structure
  20. Pointers – Difference between Array and Pointer
  21. Are “malloc(sizeof(struct a *))” and “malloc(sizeof(struct a))” the same?
  22. C – SizeOf Pointers
  23. Swapping pointers in C (char, int)
  24. What is double star (eg. NSError **)?
  25. Where in memory are string literals ? stack / heap? [duplicate]
  26. How to include a dynamic array INSIDE a struct in C?
  27. Difference between *ptr[10] and (*ptr)[10]
  28. How are we able to access the pointer after deallocating the memory?
  29. Can a “container_of” macro ever be strictly-conforming?
  30. Difference between pointer to pointer and pointer to array?

Leave a Comment