Variables Constants Datatypes

All identifiers are variables

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A variable is a location in the computer’s memory to hold a piece of data.

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A variable can be assigned multiple datatypes

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Pi is an example of a constant used in a program

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A variable must be named and assigned a datatype in strict programming languages.

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There is no difference between a variable and a constant

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You can name a variable any which way you like once it is of reasonable length

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The variable StudentID holds a combination of letters and numbers (e.g.BA001). The datatype of the variable is string.

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The variable NUMBER holds both positive and negative whole numbers. The datatype of NUMBER is real.

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X is a valid variable name

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