void hello (char id) 
{
    cout << "Hi! I am a process!" << endl; 
    cout << "My ID is: " << id << endl;
    cout << "Bye!" << endl;
}

main() 
{
    cobegin  { 
        hello('A'); hello('B'); hello('C');
    } 
    
    cout << "All processes finished" << endl; 
}