12 lines
232 B
C
12 lines
232 B
C
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int fac_aux(int n, int acc) {
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return n < 1 ? acc : fac_aux(n - 1, acc * n);
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}
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int fac_auxSafe(int n, int acc) {
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return n<0 ? -1 : n < 1 ? acc : fac_aux(n - 1, acc * n);
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}
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int factorial(int n) {
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return fac_aux(n, 1);
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}
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