I need program whiCH ables to calculates the factorial of 200 (200!).

Question

I tried below program with unsigned long long but still 200! is more than that so I am getting 0 as output.
#include<iostream>
using namespace std;

int num;

int factorial(int n) {
if (n==1) {
return 1;
}
else {
return n * factorial(n-1);
}
}
int main() {
cin >> num;
cout << factorial(num);
}

Answer 1

https://code.sololearn.com/cPPAOJn2h60d/?ref=app

@Eric thanks for the idea...

Answer 2

You could use a vector<int> to make your own "BigNum" class. So instead of int=19345 you would have vector <int> {1, 9, 3, 4, 5}. Then you would have to define multiplication for these BigNum objects.

Answer 3

Wow, you did it! Excellent!

Answer 4

Here is the code:

https://code.sololearn.com/cM4VQXlTNKYF/?ref=app