c++ primer plus 習題6.3（switch）

#include<iostream>
using namespace std;
int main(){
	cout<<"please enter one of the following choices:\n";
	cout<<"c) carrnivore"<<"\t"<<"p) pinist\n";
	cout<<"t) tree"<<"\t"<<"g) game\n";
	char choice;
	cin>>choice;
	while(choice!='c'&&choice!='p'&&choice!='t'&&choice!='g'){
		cout<<"please enter a c, p, t, or g;";
		cin>>choice;
		cout<<"\n";
	}
	//while(choice=='c'||choice=='p'||choice=='t'||choice=='p'){
		switch(choice){
			case 'c'	:cout<<"A maple is a carrnovore\n";	break;
			case 'p'	:cout<<"A maple is a pinist\n";	break;
			case 't'	:cout<<"A maple is a tree\n";	break;
			case 'g'	:cout<<"A maple is a game\n";	break;
	}
	return 0;
}