有没有办法在 C++ 中访问外部作用域中的局部变量?

Just out of curiosity: if I have nested scopes, like in this sample C++ code

using namespace std;

int v = 1; // global

int main (void)
{
    int v = 2; // local
    {
        int v = 3; // within subscope
        cout << "subscope: " << v << endl;
        // cout << "local: " << v << endl; 
        cout << "global: " << ::v << endl;
    }
    cout << "local: " << v << endl;

    cout << "global: " << ::v << endl;

}

有没有办法从中间"范围(非全局或本地)访问变量 v 的值 2?

int main (void)
{
    int v = 2; // local 
    int &vlocal = v;
    {
        int v = 3; // within subscope
        cout << "local: " << vlocal  << endl; 
    }
}