//enum class E_Dog
enum  E_Dog
{
    Poodle,     //  0
    Shiba,      //  1
    Chihuahua=11,  //  2
    Bulldog,    //  3
};

void enum_cast()
{
    cout<<static_cast<int>(E_Dog::Poodle)<<endl;
    cout<<static_cast<int>(E_Dog::Shiba)<<endl;
    cout<<static_cast<int>(E_Dog::Chihuahua)<<endl;
    cout<<static_cast<int>(E_Dog::Bulldog)<<endl;
    int num[4] = { 0 };

    num[(int)E_Dog::Poodle] = 100;              //  従来のキャスト

    num[static_cast<int>(E_Dog::Shiba)] = 200;  //  static_castによるキャスト
    cout<<static_cast<int>(E_Dog::Shiba)<<endl;

    E_Dog dog = E_Dog::Poodle;
    cout<<"static_cast<int>(dog) = "<<static_cast<int>(dog)<<endl;

    E_Dog dog2 = E_Dog::Bulldog;
    cout<<"static_cast<int>(dog2) = "<<static_cast<int>(dog2)<<endl;
    return;
}


===============================================

Processing enum_cast.C...
0
1
11
12
1
static_cast<int>(dog) = 0
static_cast<int>(dog2) = 12