以下代码没有语法错误，编译可以通过。不过输入p之后报错。
我头都大了！！！
谁来帮我啊！
#include "iostream.h"
#include "conio.h"
class node
{
public:
    node();
    node* createlidt();          //
    node* inlist(node*head);     //插入一个员工信息
    node* del(node*head,int num);//删除
    void showlist(node*head);              //查看链表
    int GetInfo(int sex);//sex=0,男职工信息；=1，女职工信息
    static int total;

private:
    int number;
    int age;
    int sex;
    node*next;
};
int node::total=0;
node*head;
node::node(){number=1;age=1;sex=1;}
int node::GetInfo(int sex)
{    
    if(sex)cout<<"男员工信息如下：\t"<<endl;
    else cout<<"女员工信息如下：\t"<<endl;
    cout<<"number"<<"     "<<"age"<<"      "<<"sex"<<endl;
    while (head&&sex==this->sex)
    {cout<<head->number<<"     "<<head->age<<"      "<<head->sex<<endl;
    head=head->next;}
    cout<<endl;

    return 0;
}



void node::showlist(node*head)
{
    cout<<"员工信息如下：\t"<<endl;
    cout<<"number"<<"     "<<"age"<<"      "<<"sex"<<endl;
    while (head->next)
    {cout<<head->number<<"     "<<head->age<<"      "<<head->sex<<endl;
    head=head->next;}
    cout<<endl;
}
node* node::createlidt()
{node*s,*p;
    s=new node;
    cout<<"新建数据库"<<endl;
    cout<<"插入一个员工信息"<<endl;
    cout<<"号码为零时结束"<<endl;
       cout<<"Input number"<<endl;
       cin>>s->number;
       cout<<"Input age"<<endl;
       cin>>s->age;
       cout<<"Input sex"<<endl;
       cin>>s->sex;
       head=NULL;
       while(s->number!=0)
       {if(head==NULL)head=s;
       else p->next=s;
       p=s;
       s=new node;
       cout<<"插入一个员工信息"<<endl;
       cout<<"Input number"<<endl;
       cin>>s->number;
       cout<<"Input age"<<endl;
       cin>>s->age;
       cout<<"Input sex"<<endl;
       cin>>s->sex;
       }
       p->next=NULL;
       delete s;
       return(head);
}


node* node::inlist(node*head)
{
    node*p,*s,*q;
    s=new node;
    p=head;
    while(q){q->next;}
    q->next=s;
    cout<<"插入一个员工信息"<<endl;
       cout<<"Input number"<<endl;
       cin>>s->number;
       cout<<"Input age"<<endl;
       cin>>s->age;
       cout<<"Input sex"<<endl;
       cin>>s->sex;
        s->next=NULL;
        delete s;
        return (head);
}
node* node::del(node*head,int num)
{
    node *s,*p;
    for (p=head;p->next;p->next)
    {if(p->next->number=num)
    {s=p->next;
    p->next=s->next;
    delete s;
    cout <<num<<"号已删除"<<endl;
    return head;
    }
}}







int main(int argc, char* argv[])
{
    
    node y;
    node *p;
    p=&y;
    y.createlidt();
   int code=0;
again:  
   cout<<"员工管理信息系统"<<endl;
   //cout<<"员工总数"<<total<<endl;
   char c=getch();
   switch(c){
   //  case 's':
   //         y.showlist(p);
   //         break;
   
   case 'i':
      
       y.inlist(p); //插入一个员工信息
       break;
     case 'd':
       cout<<"删除一个员工信息"<<endl;
       cin>>code;
       y.del(p,code);  //删除一个员工信息
       break;
     case  'p':
       y.showlist(p);   //显示所有员工信息
       break;
     case 'g':
         cout<<"男（0）或女（1）"<<endl;
       cin>>code;
       y.GetInfo(code);
   
    }
   goto again;

    return 0;
}