C pointer on a pointer : unused variable

Question

I was just doing my first app in C and i have this warning (edited) : unused variable pp

int compteur =  1;
int *p = &compteur;
int **pp = &p;

I was just trying to make pp pointing on the adress of the variable p

Forgive me if that's a stupid question, but in my book they don't talk about pointers on pointer. Thanks

Answer 1

That's perfectly legitimate. Your compiler is just informing you that you made a variable, then didn't do anything with it - normally indicating a programming error.