#include <iostream>

using namespace std;

int main () {
    int i{20};

    cout << "23/4  = " << 23/4 << endl;
    cout << "23%4  = " << 23%4 << endl;
    cout << "2/4  = " << 2/4 << endl;
    cout << "2%4  = " << 2%4 << endl;

    cout << endl << endl;

    cout << " i = " << i << endl;
    i++;
    cout << " i = " << i << endl;
    cout << " i++ = " << i++ << endl;
    cout << " i = " << i << endl;
    cout << " ++i = " << ++i << endl;
    cout << " i = " << i << endl;
    cout << " i-- = " << i-- << endl;
    cout << " i = " << i << endl;
    //i = i * 2;
    i *= 2;



    return 0;
}