很基础的问题，希望大家多帮忙哦！

[uglybetty9876]

#include <iostream>
struct bop{
char fullname[100]; //real name
char title[100]; //job title
char bopname[100]; //secret bop name
int preference; //0=fullname,1=job title,2=bopname
};
main()
{using namespace std;
char ch;
cout<<"Bene volent Order of Programmers Report"<<endl;
cout<<"a.display by name b.diaplay by title"<<endl;
cout<<"c.display by bopname d.diaplay by preference"<<endl;
cout<<"q.quit"<<endl;
cout<<"Enter your choice:";
cin.get(ch);
while((ch)!='Q'&&(ch)!='q')
{ switch(ch)
{case 'a': cout<<"Wimp Macho"<<endl<<"Raki Rhodes"<<endl<<"Celia Laiter"<<endl;
cout<<"Hoppy Hipman"<<endl<<"Pat Had"<<endl;
break;
case 'b': cout<<"student"<<endl<<"Junior Programmer"<<endl<<"docter"<<endl;
cout<<"Analyst"<<endl<<"boss"<<endl;
break;
case 'c': cout<<"Love"<<endl<<"Bud"<<endl<<"MIPS"<<endl;
cout<<"Flower"<<endl<<"LOOPY"<<endl;
break;
case 'd': cout<<"Wimp Macho"<<endl<<"Junior Programmer"<<endl<<"MIPS"<<endl;
cout<<"Analyst"<<endl<<"LOOPY"<<endl;
break;
default: break;
}

cout<<"Next choice:";
cin.get(ch);
}
if(ch=='Q'||ch=='q') cout<<"Bye!"<<endl;
return 0;
}
我的运行结果是：

Bene volent Order of Programmers Report
a.display by name b.diaplay by title
c.display by bopname d.diaplay by preference
q.quit
Enter your choice:a
Wimp Macho
Raki Rhodes
Celia Laiter
Hoppy Hipman
Pat Had
Next choice:Next choice:

为什么我的Next choice:出现两次啊？

[qq6287976]

这个问题是由循环体里的get.cin(ch)引起的 至于为什么 我也不知道 用cin>>ch;就正常了
等高人解答 为什么

[MMMoonriver]

顶3楼，

[uglybetty9876]

谢谢你啊！感觉你很认真的看我的问题了！
就给你多点分吧！

我是个初学者，菜鸟一个！
还是不明白，
为什么加上那一句就好了呢？
我是在VC++6.0下编译的。
希望高手解答哦！
(*^__^*)...嘻嘻

[uglybetty9876]

呵呵...
不管怎么说，谢谢你了！
指出了我的毛病所在！

[pengzhixi]

我这正常,dev-cpp

[光宇广贞]

你是VC6吧……如是，那就别怪谁了，怪自己吧

[majun01]

#include <iostream> 
struct bop{ 
          char fullname[100]; //real name 
          char title[100];  //job  title 
  char bopname[100]; //secret bop name 
  int  preference;  //0=fullname,1=job title,2=bopname 
  }; 
main() 
{
	using namespace std; 
	char ch; 
	cout<<"Bene volent Order of Programmers Report"<<endl; 
	cout<<"a.display by name        b.diaplay by title" <<endl; 
	cout <<"c.display by bopname    d.diaplay by preference" <<endl; 
	cout <<"q.quit" <<endl; 
	cout <<"Enter your choice:"; 
	cin.get(ch); 
	while((ch)!='Q'&&(ch)!='q') 
	{ 
		switch(ch) 
		{
			case 'a': cout <<"Wimp Macho" <<endl <<"Raki Rhodes" <<endl <<"Celia Laiter" <<endl; 
				cout <<"Hoppy Hipman" <<endl <<"Pat Had" <<endl; 
				break; 
			case 'b': cout <<"student" <<endl <<"Junior Programmer" <<endl <<"docter" <<endl; 
				cout <<"Analyst" <<endl <<"boss" <<endl; 
				break; 
			case 'c': cout <<"Love" <<endl <<"Bud" <<endl <<"MIPS" <<endl; 
				cout <<"Flower" <<endl <<"LOOPY" <<endl; 
				break;  
			case 'd': cout <<"Wimp Macho" <<endl <<"Junior Programmer" <<endl <<"MIPS" <<endl; 
				cout <<"Analyst" <<endl <<"LOOPY" <<endl; 
				break; 
			default: break; 
		} 
		
		fflush(stdin);   ///加上这一句就没问题了。

		cout <<"Next choice:"; 
		cin.get(ch); 
	} 
	if(ch=='Q'||ch=='q')  cout <<"Bye!" <<endl; 
	return 0; 
} 

[猫已经找不回了]

编译正常

[猫已经找不回了]

编译正常

[猫已经找不回了]

编译正常

[ican008]

编译正常啊