برنامه محاسبه ی فاکتوریل با حلقه ی تکرار فور for به زبان سی پلاس پلاس

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factorial = 1*2*3...*n

#include <iostream>
using namespace std;

int main() {
    unsigned int n;
    unsigned long long factorial = 1;
    cout << "Enter a positive integer: ";
    
    cin >> n;
    for(int i = 1; i <=n; ++i) {
        factorial *= i;
    }
    cout << "Factorial of " << n << " = " << factorial;
    
    return 0;
}

Output

Enter a positive integer: 12
Factorial of 12 = 479001600