How to understand the construction "pointer to pointer"?

Question

Programming

Hello!
Suppose there is a construction of the form
void func(int **Variable);
I understand that an expression of the form *Variable will pass a pointer to a variable into the function, but why pass a pointer to a pointer? What could be the point?

Answer 1

Here with pictures.
cppstudio.com/post/9555

Answer 2

this is a dumb crutch as a replacement for an array, if you are not programming a Boeing CPU, forget about pointers, in practice they are used either by pros to speed up code or by masochists, usually and more often the latter.

Answer 3

const int**pp2;
int*p1;
const int n = 14;
pp2 = &p1;
*pp2 = &n;
*p1 = 100;
There is such a trick in C for changing a constant variable)
Now n=100