Data types

Table of Contents

• Introduction
• Numbers
• Logicals
• Character strings
• Challenge solutions

Introduction

We now know about variables: to store something in the computer's memory, we need to name it. What type of information can we store? In spoken language we have nouns, verbs, adverbs, etc. In programming we can use numbers, logicals and character strings.

Numbers

Numbers can be:

• integers or whole numbers, such as 1, 2, 3
• doubles with decimal point values, such as 1.25, 3.75
• complex numbers with imaginary components such as 3 + 2i, 9 + 6i

Logicals

Logicals, also known as Booleans, have two possible values:

• TRUE
• FALSE

Logicals are useful when comparing data.

Character strings

Character strings are made up of letters, numbers and special characters and are generally surrounded by quotation marks. Here we have Research and Platforms as two separate character strings: "Research", "Platrforms".

Challenge solutions