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Comma operator
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<p>In the <a href="/facts/C_/Ky2No763">C</a> and <a href="/facts/C%2B%2B/Et0F2qn9">C++</a> programming languages, the comma operator (represented by the <a href="/facts/Token_(parser)/T1JYWpIf">token</a> ,) is a <a href="/facts/Binary_operator/CYtow0bz">binary operator</a> that evaluates its first <a href="/facts/Operand/HSuUzrKz">operand</a> and discards the result, and then evaluates the second operand and returns this value (and type); there is a <a href="/facts/Sequence_point/f4xdSEAx">sequence point</a> between these evaluations. </p><p>The use of the comma token as an <a href="/facts/Operator_(computer_programming)/7TnU5LKu">operator</a> is distinct from its use in <a href="/facts/Function_call/9vFJrg0A">function calls</a> and definitions, variable declarations, enum declarations, and similar constructs, where it acts as a <a href="/facts/Delimiter/wRAQxIKV">separator</a>. </p>