Computing - Writing Maintainable Programs

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Variable
Names location in memory, given a data type and initial value. Can change during a Run Time
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Constant
Like a variable but cannot be changed. When the program is running
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Identifier
The name given to variables, constants and sub-procedures.
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Reserved Keywords
A word reserved for use by the programming language.
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Scope
Refers to the visibility of a variable E.g Local or Global
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Subroutines
A set of instructions designed to perform a frequently used operation within a program.
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Local Variable
A variable that can only be seen within a subroutine
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Global Variable
A variable that can be seen throughout the whole code
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Other cards in this set

Card 2

Front

Like a variable but cannot be changed. When the program is running

Back

Constant

Card 3

Front

The name given to variables, constants and sub-procedures.

Back

Preview of the back of card 3

Card 4

Front

A word reserved for use by the programming language.

Back

Preview of the back of card 4

Card 5

Front

Refers to the visibility of a variable E.g Local or Global

Back

Preview of the back of card 5
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