main.cpp

#include <iostream>
using namespace std;
enum class Color : char { RED, GREEN, BLUE };
enum class Mark { ONE, TWO, THREE, FOUR, FIVE };
Color redColor = Color::RED;
Mark  fiveMark = Mark::FIVE;
int main()
{
    cout << sizeof ( Color ) << endl; // Вывод: 1
    cout << sizeof ( redColor ) << endl;  // Вывод: 1
    cout << sizeof ( Mark ) << endl; // Вывод: 4
    cout << sizeof ( fiveMark ) << endl; // Вывод: 4
}