I saw an odd code snippet(seen below). ):
Is there any potential problem with this code snippet when using C++11 and perior to C++11? The aforementioned code snippet really compiles and works well with gcc.

#include <iostream>
#include <array>
#include <algorithm>

int main() {

    switch (1) {
        default:
            std::cout << "in default" << std::endl;
            break;
        case (1):
            std::cout << "in case 1" << std::endl;
            break;
    }

    return 0;
}