Difference between -> and . in a struct?

Question

If I have a struct like

struct account {
   int account_number;
};

Then what\'s the difference between doing

myAccount.acco         


        

Answer 1

You use the different notation according to whether the left-hand side is a object or a pointer.

// correct:
struct account myAccount;
myAccount.account_number;

// also correct:
struct account* pMyAccount;
pMyAccount->account_number;

// also, also correct
(*pMyAccount).account_number;

// incorrect:
myAccount->account_number;
pMyAccount.account_number;