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Definition of Variable

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Definition: A variable is a way of referring to a memory location used in a computer program. This memory location holds values- perhaps numbers or text or more complicated types of data like a payroll record.

Operating Systems load programs into different parts of RAM so there is no way of knowing exactly which memory location will hold a particular variable before the program is run. By giving a variable a symbolic name like "employee_payroll_id" the compiler or interpreter can always work out where to store the variable in memory.

Glossary:

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Examples:
This variable holds the name and address of the employee.
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