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Expression (computer science)
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==Void as a result type== In [[C (programming language)|C]] and most C-derived languages, a call to a function with a [[Void type|void]] return type is a valid expression, of type void.<ref> [http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf ISO/IEC 9899:1999] section 6.3.2.2, accessed August 31, 2009 </ref> Values of type void cannot be used, so the value of such an expression is always thrown away.
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