Variable
a characteristic or attribute that can assume different valuesages of buildings, heights of 5 year olds, college students major, colors of cars, etc.
A variable is a symbol, usually a letter, that represents a quantity or a value that can change. In programming, a variable is a memory location that stores data, and the value of that data can be modified or assigned a different value during the execution of a program. Variables are used to hold information that is used in calculations, conditions, or expressions. The value of a variable can be assigned at runtime or at compile time. In mathematics and science, variables are used to represent unknown values or quantities in equations and formulas.
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