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comp.lang.c FAQ list · Question 20.39b

Q: What do ``lvalue'' and ``rvalue'' mean?

A: Simply speaking, an lvalue is an expression that could appear on the left-hand sign of an assignment; you can also think of it as denoting an object that has a location. (But see question 6.7 concerning arrays.) An rvalue is any expression that has a value (and that can therefore appear on the right-hand sign of an assignment).

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