Question

Write a program on C++ to calculate and print the factorial of a number using a for loop. The factorial of a number is the product of all integers up to and including that number, so the factorial of 4 is 4*3*2*1= 24.

Answer 1

#include <iostream>

using namespace std;

int main() {
    int n;
    cout << "Enter a positive integer: ";
    cin >> n;
    int factorial = 1;
    for (int i = n; i >= 1; --i) {
        factorial *= i;
        cout << i;
        if (i != 1) {
            cout << "*";
        }
    }
    cout << "=" << factorial << endl;
    return 0;
}