Chapter 3

Compare and Contrast Fundamental Data Types and Their Characteristics

Whether you’re programming, crunching numbers with spreadsheets, or figuring out binary logic, understanding the fundamental data types used by Information Technology is foundational. In this chapter, you learn about IT Fundamentals+ Objective 1.2: Compare and contrast fundamental data types and their characteristics: char, strings, numbers (integers and floats), and Boolean.

Foundation Topics

Char

Char is an abbreviation for character. Many programming languages use char as a reserved keyword, including Visual Basic, SQL, Java, C languages, and others. Char is a data type that refers to a single character or a single-character variable. For example, each of the ...

Get CompTIA IT Fundamentals+ FC0-U61 Cert Guide now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.