c - Dereference a pointer inside a structure pointer

Question

I have a structure:

struct mystruct
{
    int* pointer;
};

structure mystruct* struct_inst;

Now I want to change the value pointed to by struct_inst->pointer. How can I do that?

EDIT

I didn't write it, but pointer already points to an area of memory allocated with malloc.

question from:https://stackoverflow.com/questions/2581769/dereference-a-pointer-inside-a-structure-pointer

Answer 1

As with any pointer. To change the address it points to:

struct_inst->pointer = &var;

To change the value at the address to which it points:

*(struct_inst->pointer) = var;