Data Types and Structures

Introduction
1. Programs need to be able to store data such as texts, whole numbers, decimal numbers, etc
2. Data types such as integers and strings are used to store these peices of text, numbers, etc
3. Each data type is stored in the computer's main memory
4. Data types also restrict the actions that can be carried out on them. This helps reduce human mistakes such as trying to multiply two letters together.
Strings
1. Strings are used to store text and sequences of characters
2. Eg "Hamster", "Rasperry Fudge Cakes"
Integer
1. Integers are used to store positive and negative whole numbers, as well as the number zero
2. Eg 42, 0, -100, 64
Real
1. Real data tyoes are used to store positive and negative decimal numbers or fractions.
2. Eg 0.5, 1.236, -5.6
Boolean Variables
1. Booleans are used to store only two values: True or False
2. Eg True, or False
One Dimensional (1-D) Arrays
1. Many programs requie data to be stored and manipulated not as a single itme but as a list of related data entries.
2. An array is used to store a collection of data where the data is all the same data type
3. Each Element in the array is identified by using an array name and an index number which corresponds to the datas location in the array
4. When an array is created it's length is declared

Zusammenfassung der Ressource

	Erstellt von Saji McCorkindale vor mehr als 9 Jahre