C++ Example calculating the factorial of the entered number

In this example, we show how to calculate the factorial of the entered number with the help of a function.

#include <iostream>
using namespace std;

int factorial(int num) {
    int result = 1;
    for (int i = 2; i <= num; i++) {
        result *= i;
    }
    return result;
}

int main() {
    int number;
    cout << "Enter a number: ";
    cin >> number;
    int factorialResult = factorial(number);
    cout << "Factorial: " << factorialResult << endl;

    return 0;
}