24 lines
375 B
C++
24 lines
375 B
C++
//
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// Created by light on 19-12-28.
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//
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#include <iostream>
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using namespace std;
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template<int n>
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struct factorial {
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static_assert(n >= 0, "Arg must be non-negative");
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static const int value = n * factorial<n - 1>::value;
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};
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template<>
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struct factorial<0> {
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static const int value = 1;
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};
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int main() {
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printf("%d\n", factorial<-1>::value);
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return 0;
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} |