C++ primer plus 6th 6.3答案

#include <iostream>
using namespace std;
void menu(void);
int main() {
    char ch;
    menu();
   A: cin.get(ch).get();
    switch(ch)
    {
        case 'c':cout<<"Tigger is a carnivore."<<endl;
            break;
        case 'p':cout<<"Di is a pianist."<<endl;
            break;
        case 't':cout<<"A maple is a tree."<<endl;
            break;
        case 'g':cout<<"He likes play games."<<endl;
            break;
        default :cout<<"Please enter a c,p,t,or g:";
            goto A;
    }
    return 0;
}
void menu(void)
{
    cout<<"Please enter one of the following choices:"<<endl;
    cout<<"c) carnivore         p) pianist"<<endl
        <<"t) tree              g) game"<<endl;
    
}```