怎样在switch语句后创建类对象？？求解
写了一个学校管理系统，但是到最后选择的时候不太会，怎样在switch语句后创建类对象？？求解啊求解
下面上代码代
程序代码：#include <iostream>
#include <string>
using namespace std;
#define null
class record
{
public:
record(string nam,string sex,int ca,int bir,string add,int a):name(nam),sex(sex),card(ca),birth(bir),address(add),age(a){}
void input()
{
cout<<"请输入姓名："<<endl; cin>>name;
cout<<"请输入性别："<<endl; cin>>sex;
cout<<"请输入身份证号："<<endl; cin>>card;
cout<<"请输入生日："<<endl; cin>>birth;
cout<<"请输入地址："<<endl; cin>>address;
cout<<" 请输入年龄："<<endl; cin>>age;
}
void display()
{
cout<<"姓名："<<name<<" "<<"性别："<<sex<<" "<<"身份证号："<<card<<endl;
cout<<"生日："<<birth<<" "<<"地址："<<address<<" "<<"年龄："<<endl;
}
private:
string name;
string sex;
int card;
int birth;
string address;
int age;
};
class student:public record
{
public:
student(string nam,string sex,int ca,int bir,string add,int a,int num,int ro,string sub,int gr):record( nam, sex, ca, bir, add, a)
{number=num;
room=ro;
subject=sub;
grade=gr;
}
void inputstu()
{
input();
cout<<"请输入学号："<<endl; cin>>number;
cout<<"请输入宿舍号："<<endl; cin>>room;
cout<<"请输入专业："<<endl; cin>>subject;
cout<<"请输入年级："<<endl; cin>>grade;
}
void showstu()
{
display();
cout<<"学号："<<number<<" "<<"宿舍号："<<room<<" "<<"专业："<<subject<<" "<<"年级："<<grade<<endl;
}
private:
int number;
int room;
string subject;
int grade;
};
class teacher:public record
{
public:
teacher(string nam,string sex,int ca,int bir,string add,int a,int ap,int wo,int ea,string th,string re,int yanum):
record(nam,sex,ca,bir,add,a)
{apartment=ap;
work=wo;
earn=ea;
teach=th;
research=re;
yanumber=yanum;
}
void inputtea()
{
input();
cout<<"请输入公寓："<<endl; cin>>apartment;
cout<<"请输入工作时间："<<endl; cin>>work;
cout<<"请输入所教专业："<<endl; cin>>teach;
cout<<"请输入科研单位："<<endl; cin>>research;
cout<<"请输入所带研究生数目："<<endl; cin>>yanumber;
}
void showtea()
{
display();
cout<<"公寓："<<apartment<<" "<<"工作时间："<<work<<" "<<"收入："<<earn<<" "<<"所教科目："<<teach<<" "<<"科研名称："
<<research<<" "<<"所带研究生数目："<<yanumber<<endl;
}
private:
int apartment;
int work;
int earn;
string teach;
string research;
int yanumber;
};
int main()
{ int flag=1;
student *stu=null;teacher *tea=null;
while(flag)
{
cout<<"================================================="<<endl;
cout<<" 1 学生通道 2 教师通道 "<<endl;
cout<<" 3 退出 "<<endl;
cout<<"================================================="<<endl;
cout<<"请输入您的选择："<<endl;
int choice;
cin>>choice;
switch(choice)
{
case 1: stu=new student();if(stu) *stu->inputstu();cout<<"现在核查一遍信息："<<endl;*stu->showstu();break;
case 2: tea=new student();if(tea) *tea->inputtea();cout<<"现在核查一遍信息："<<endl;*tea->showtea();break;
case 3: break;
}
}
return 0;
}
代码某错了，但在运行的时候出现了死循环，大哥，能给指点一下不？