C language_ Structure pointer variable introduction

Structure pointer variable introduction

01—— Concept introduction

memories ：

The pointer is the address ！

A pointer variable is a variable that holds an address ！

Structures are also variables ！

There are two ways to access variables ：1. Variable name directly access 2. Address indirect access ！

Previous cases , It is accessed directly by variable name .

Accessing the structure through its variable address requires a variable to save this address ： This is the same as the pointer mentioned before , It's the same thing . Only the type of pointer is structure .

02—— Access the structure content through the structure pointer

Be careful ：

Variable name access ： Use dot operator

Address access ： use “->” Operator