21.) In this c++ program. Create a flowchart and algorithm. Source Code: #include using namespace std; int main() { int n; long double factorial = 1.0; cout > n; if (n

21.) In this c++ program. Create a flowchart and algorithm.

Source Code:

#include
using namespace std;

int main() {
    int n;
    long double factorial = 1.0;

    cout < "enter="" a="" positive="" integer:="">
    cin >> n;

    if (n <>
        cout < "error!="" factorial="" of="" a="" negative="" number="" doesn't="">
    else {
        for(int i = 1; i <= n;="" ++i)="">
            factorial *= i;
        }
        cout < "factorial="" of="" "="">< n="">< " = " << factorial;
    }

    return 0;
}

    return 0;
}