Programming Basics: Variables & Expressions

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Variable

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A storage location identified by a name.

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Keyword

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Reserved word with special meaning.

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Statement

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A complete instruction in a program.

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Expression

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Combination of variables and operators.

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Assignment

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Setting a value to a variable.

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Data Type

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Defines the type of data (e.g., int, string).

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Operator

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Symbol that performs operations (e.g., +, -).

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Syntax

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Rules for writing code.

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Constant

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A value that does not change.

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Declaration

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Introducing a new variable or function.