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		type casting the explicit conversion of a value from one data type to another; also called type conversion



		type coercion the implicit (automatic) conversion of a value from one data type to another



		U



		unary operator an operator that has just one operand



		V



		value parameter a formal parameter that receives a copy of the contents of the corresponding actual parameter



		value-returning function a function that returns a single value to its caller and is invoked from within an expression



		variable a location in memory, referenced by an identifier, in which a data value that can be changed is stored



		void function (procedure) a function that does not return a function value to its caller and is invoked as a separate statement



		W



		work a measure of the effort expended by the computer in performing a computation

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