案例语句不执行

这对我来说是一个越来越大的烦恼来源，当我按下相应的案例按钮（它们在上面初始化）时，它们实际上并没有执行，我被困在菜单中。

敢肯定这非常简单，我只是没有看到它。

编辑：根据要求添加更多

const int POKER = 1;
const int EVAL = 2;
const int EXIT = 3;
const char FIVE_CARD = 'a';
const char TEXAS = 'b';
const char OMAHA = 'c';
const char SEVEN_CARD = 'd';
const char GO_BACK = 'e';
const char MENU[] = "nPlease choose an option from the following:n"
                    "1) Play Pokern2) Set Evaluation Methodn3) Quitn: ";
const char POKER_MENU[] = "nPlease choose your game:n"
                          "a) 5 Card Drawnb) Texas Hold 'Emnc) Omaha Highn"
                          "d) 7 Card Studne) Go backn: ";
int main()
{
int choice = 0;
char poker_choice;
do
{
    choice = askForInt(MENU, EXIT, POKER);
    switch(choice)
    {
        case POKER :
            do
            {
                choice = askForChar(POKER_MENU, GO_BACK, FIVE_CARD);
                switch(poker_choice)
                {
                    case FIVE_CARD :
                        std::cout << "Not implemented yet" << std::endl;
                        break;
                    case TEXAS :
                        std::cout << "Not implemented yet" << std::endl;
                        break;
                    case OMAHA :
                        std::cout << "Not implemented yet" << std::endl;
                        break;
                    case SEVEN_CARD :
                        std::cout << "Not implemented yet" << std::endl;
                        break;
                    case GO_BACK :
                        break;
                }
            }while(poker_choice != GO_BACK);
        case EVAL :
            std::cout << "Not implemented yet" << std::endl;
            break;
        case EXIT :
            break;
    }
}while(choice != EXIT);