Не работает прога

#include <iostream>
using namespace std;
int main()
{//Начало
int x,y;
cout<<"Vvedite chislo ";
cin>>x;
switch(x)
{   
case 0: cout<<"zero"; break;
case 1: cout<<"one"; break;
case 2: cout<<"two"; break;
case 3: cout<<"three"; break;
case 4: cout<<"four"; break;
default:
{
cout<<"Vvedite drugoe chislo";
cin>>y;
switch(y)
{
case 0: cout<<"zero"; break;
case 1: cout<<"one"; break;
case 2: cout<<"two"; break;
case 3: cout<<"three"; break;
case 4: cout<<"four"; break;
}
} 
}
for(;;) //Бесконечный цикл
{}
return 0;
}//Конец

system("pause");

#include <iostream>
using namespace std;
int main()
{//Начало
int x,y;
 
do
{
cout<<"Vvedite chislo ";
cin>>x;
switch(x)
{    
case 0: cout<<"zero"<<endl; break;
case 1: cout<<"one"<<endl; break;
case 2: cout<<"two"<<endl; break;
case 3: cout<<"three"<<endl; break;
case 4: cout<<"four"<<endl; break;
default: cout<<"Vvedite drugoe chislo (1-4)"<<endl;
}
}while (x < 0 || x > 4 );
system ("pause");
return 0;
}//Конец

#include <iostream>
using namespace std;
int main()
{//Начало
int x,y;
cout<<"Vvedite chislo ";
cin>>x;
switch(x)
{       
case 0: cout<<"zero"; break;
case 1: cout<<"one"; break;
case 2: cout<<"two"; break;
case 3: cout<<"three"; break;
case 4: cout<<"four"; break;
default:
    {
cout<<"Vvedite drugoe chislo";
cin>>y;
switch(y)
{
case 0: cout<<"zero"; break;
case 1: cout<<"one"; break;
case 2: cout<<"two"; break;
case 3: cout<<"three"; break;
case 4: cout<<"four"; break;
}
} 
}
system("pause");
return 0;
}

    default:
        cout << "Vvedite drugoe chislo: ";
        
        cin >> y;
 
        switch (y) {
        case 0:
            cout << "zero";
            break;
        case 1:
            cout << "one";
            break;
        case 2:
            cout << "two";
            break;
        case 3:
            cout << "three";
            break;
        case 4:
            cout << "four";
            break;
        }
 
    }
 
    cout << endl;