Factorial of N numbers

factorialOf_N_Numbers.cpp 
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#include <bits/stdc++.h>
using namespace std;

int factorialOf_N_Numbers(int n){
    int fact = 1;
    if(n==0)
        return 1;
    fact = n * factorialOf_N_Numbers(n-1);
    return fact;
}

int main() {
    int n;
    cin >> n;
    cout << factorialOf_N_Numbers(n);
    return 0;
}
Output 
5
120