Suppose I have the following struct and function returning a pointer:

typedef struct {
  int num;
  void *nums;
  int size;
} Mystruct;

Mystruct *mystruct(int num, int size)
{
   ....
}

I want to define any Mystruct pointer using the above function. Should I declare a Mystruct variable, define the properties of Mystruct, assign a pointer to it, and return the pointer or define the properties of a mystruct property through a pointer immediately?