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Sams Teach Yourself C++ in 24 Hours, Third Edition by Jesse Liberty

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What Is a Pointer?

A pointer is a variable that holds a memory address.

Stop. Read that again. A pointer is a variable. You know what a variable is; it is an object that can hold a value. An integer variable holds a number. A character variable holds a letter. A pointer is a variable that holds a memory address.

Okay, so what is a memory address? To fully understand this, you must know a little about computer memory. Don't panic; it isn't very difficult.

Computer memory is where variable values are stored. By convention, computer memory is divided into sequentially numbered memory locations. Each of these locations is a memory address.

Every variable ...

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