/************************************************************************
ex00.cpp
************************************************************************/
#include <iostream>
using namespace std;


int factoral(const int end) {
    int result = 1;
    for (int i = end; i > 1; i--)
        result = result * i;
    return result;
}

float factoral(const float end) {
    float result = 1;
    for (int i = end; i > 1; i--)
        result = result * i;
    return result;
}

void main() {

    for (int i = 0; i < 20; i++)
        cout << factoral(i) << endl;

    cout.precision(0);
    cout.setf(ios::fixed);
    cout << endl;
    
    for (float f = 0.0; f < 20.0; f += 1.0)
        cout << factoral(f) << endl;
}