Recursion

Question

#include <iostream>
using namespace std;

int factorial(int n) {
if (n==1) {
return 0;
}
else {
return n - factorial(n-1);
}
}

int main() {
cout << factorial(5);
}
---------------------------------------------
//output
2
????????????????????????????

Answer 1

Use multiplication symbol instead of minus to get result.

Answer 2

5- factorial(4)
👇
(4 - factorial(3))
👇
3 - factorial(2)
👇
2 - factorial(1) :

5 - (4 - (3 - (2 - 0)))
5 - (4 - (3 - 2))
5 - (4 - 1)
5 - 3
2

SO it return 2.

Edit :
[It won't call, factorial(0)]

Edit :
دانیال رضایی نژاد
whats your question actually? Pls give clarity..