#include <iostream>
using namespace std;

struct c
{
    static const int one = 1;
    enum {two = 2};
};

constexpr int array[] = {0, 1, 2, 3, 4, 5};

int main()
{
    switch (1) {
    case c::one:
        break;
    case c::two:
        break;
    case array[3]:
        break;
    case array[4]:
        break;  
    case sizeof(array):
        break;  
    }
    return 0;
}