Pointers to pointers vs. normal pointers

Question

The purpose of a pointer is to save the address of a specific variable. Then the memory structure of following code should look like:

int a = 5;
int *b = &a;         


        

Answer 1

There are different types. And there is a good reason for it:

Having …

int a = 5;
int *b = &a;
int **c = &b;

… the expression …

*b * 5

… is valid, while the expression …

*c * 5

makes no sense.

The big deal is not, how pointers or pointers-to-pointers are stored, but to what they refer.