main: (args) = {
    local_int := 42;

    //  'in' (read-only) statement scope variable
    (i := local_int) for args do (arg) {
        std::cout << i << "\n";     // prints 42
    }

    //  'inout' (read-write) statement scope variable
    (inout i := local_int) {
        i++;
    }
    std::cout << local_int << "\n";     // prints 43
}