if语句代码：
#include"iostream.h"
void main()
{
    char c;
    while(true)
    {
        cout<<"MAIN MENU:"<<endl;
        cout<<"l: left,r:right,q:quit ->";
        cin>>c;
        if(c == 'q')
            break;
        if(c=='l')
        {
            cout<<"LEFT MENU:"<<endl;
            cout<<"select c or d:";
            cin>>c;
            if(c=='c')
            {
                cout<<"you chose 'c'"<<endl;
                continue;
            }
            if(c=='d')
            {
                cout<<"you chose 'd'"<<endl;
                continue;
            }
            else
            {
                cout<<"you didn't choose c or d!"<<endl;
                continue;
            }
        }
        if(c=='r')
        {
            cout<<"RIGHT MENU:"<<endl;
            cout<<"select a or b:";
            cin>>c;
            if(c=='a')
            {
                cout<<"you chose 'a'"<<endl;
                continue;
            }
            if(c=='b')
            {
                cout<<"you chose 'b'"<<endl;
                continue;
            }
            else
            {
                cout<<"you didn't choose c or d!"<<endl;
                continue;
            }
        }
        cout<<"you must type l or r or q!"<<endl;
    }
    cout<<"quitting menu..."<<endl;
}
我转换的switch语句代码：
#include<iostream.h>
void main()
{
    char c;
    while(true)
    {
        cout<<"MAIN MENU:"<<endl;
        cout<<"l:left, r:right, q:quit ->";
        cin>>c;
        switch(c)
        {
        case'q':break;
        case'l':cout<<"LEFT MUNU:"<<endl;
            cout<<"selesct c or d:";
            cin>>c;
            switch(c)
            {
            case'c':cout<<"you chose'c'"<<endl;continue;
            case'd':cout<<"you chose'd'"<<endl;continue;
            default:cout<<"you didn't choose c or d:"<<endl;continue;
            }
            case'r':cout<<"RIGHT MUNU:"<<endl;
                cout<<"select a or b:";
                cin>>c;
                switch(c)
                {
                case'a':cout<<"you chose 'a'"<<endl;continue;
                case'b':cout<<"you chose 'b'"<<endl;continue;
                default:cout<<"you didn't choose c or d!"<<endl;continue;
                }
                default:cout<<"you must type l or r or q!"<<endl;
        }
        cout<<"quitting menu..."<<endl;
    }
}
主要问题是输入q时，不能退出菜单quitting menu..
麻烦告诉我错在哪里，顺利帮我修正一下。
而且问题不止这一个，谁能帮我编个正确的，万分感谢。


[ 本帖最后由 拉C 于 2010-6-2 14:50 编辑 ]

如果 输入q要退出程序时，要结束这个while（）循环：
flag = true；
while（flag）
cin>>c
    switch(c)
    {
        case 'q':
            flag=0;
            break;
    }

不行，

楼主试过了吗？2楼的方法应该可以吧

bool flag = true;
while(flag)
cin>>c;
    switch(c)
    {
        case 'q':
            flag=0;
            break;
    }


[ 本帖最后由 bccn250 于 2010-6-3 20:08 编辑 ]

试过了，不行啊。