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Alex Rivera
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A constexpr function must just consist of a return statement and every argument should be known at compile time: // constexpr functions use recursion rather than iteration constexpr int factorial(int n) { return n <= 1 ? 1 : (n * factorial(n-1)); } Why just the return statement? I mean, why this is wrong? // constexpr functions use recursion rather than iteration constexpr int factorial(int n) { int a = 222; //another variable return n <= 1 ? 1 : (n * factorial(n-1)); }
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