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Embedded C Programming by Mark Siegesmund

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Chapter 4

Data Variables and Types

Abstract

This chapter teaches the reader how data is declared in C. Is is explained how all data in C, whether a constant, expression, or variable, has an associated type. The relationship of the type to the range, interpretation, and storage method of the data is shown in detail.

The three most basic data types, character, integer, and floating point, are all covered in this chapter, along with the multiple variations and qualifiers that apply. Variable declarations, scope, and life are introduced in this chapter. The C typedef and enum are shown, as is the format of a C identifier and the C reserved key words.

Examples and exercises are for the popular PIC™ microcontroller manufactured by Microchip.

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