Beginning C for Arduino: Learn C Programming for the Arduino, Second Edition

© Jack Purdum 2015

Jack PurdumBeginning C for Arduino10.1007/978-1-4842-0940-0_8

8. Introduction to Pointers

Jack Purdum¹ 

(1)

Ecosoft, Inc., Cincinnati, Ohio, USA

 

Defining a Pointer

Pointer Name

Asterisk (*)

Pointer Type Specifiers and Pointer Scalars

Why All Arduino Pointers Use Two Bytes for Storage

Pointer Initialization

Using the Address-Of Operator

The Indirection Operator (*)

Why Are Pointers Useful?

Modified Blink Program

Pointers and Arrays

The Importance of Scalars

Pass-by-Value vs. Pass-by-Reference

Your Turn

One Approach

One Solution

Debug Statements Using the Serial Object

Summary

One of the most powerful features of the C programming language is pointers. While many of the features of any programming language have the power for you to shoot yourself in ...