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9918869
Programming
Descrição
Programming Theory for Computer Science
Sem etiquetas
programming
theory
computing
programming
gcse
Mapa Mental por
Jake Davis
, atualizado more than 1 year ago
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Criado por
Jake Davis
mais de 7 anos atrás
11
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Resumo de Recurso
Programming
Variables
A Variable is a piece of data which can be changed, there are data types that contain certain types of data.
Data Types
String
An ordered array of alpha-numeric text
Integer
– A number without decimals
Character
A single piece of alpha-numeric text
Boolean
A data type with only two possible values
Real (Decimal)
A number with decimals
Scoping
A variables scope refers to where the variable can be accessed and modified.
Scopes
Local Scope
When a variable can be read and modified only within the procedure in which it is declared.
Module Scope
Procedures that are in the same module can be read and modify that variable when it’s declared
Project Scope
If a variable is in project scope the variable can be read and modified within the same program and project.
Selection
An IF statement is a conditional statement and is a type of selection, it will only run parts of the program if the Boolean is True.
Operators
==
Checks if the values for the operands are equal or not;
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