cpp/math/factorial.cpp at master · romi2002/cpp · GitHub

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/* Factorial

Author: Pablo Trinidad <github.com/pablotrinidad>
*/

#include<bits/stdc++.h>
usingnamespacestd;

intfactorial(int n) {
if (n <= 0) {
return1;
 } else {
return n * factorial(n - 1);
 }
}

intmain() {
int n;
 cout << "Enter an integer n to compute its factorial: ";
 cin >> n;
int r = factorial(n);
 cout << n << "! = " << r << endl;
return0;
}