How to work with pointer to pointer to structure in C?

Question

I want to change member of structure under double pointer. Do you know how?

Example code

typedef struct {
    int member;
} Ttype;

void changeMember         


        

Answer 1

You can use a temp variable to improve readability. For example:

Ttype *temp = *foo;
temp->member = 1;

If you have control of this and allowed to use C++, the better way is to use reference. For example:

void changeMember(Ttype *&foo) {
   foo->member = 1;
}