How to know the end of int* array?

Question

I'm making a dynamic array with int* data type using malloc(). But the problems is, how to know end of array?

There no an equivalent to \0 for int* data type,so, how to do this? Pass size as out parameter of function?

Answer 1

C doesn't manage array lengths, as some other languages do.

you might consider a structure for this:

typedef struct t_thing {
  int* things;
  size_t count;
} t_thing;

in use:

t_thing t = { (int*)malloc(sizeof(int) * n), n };