#include<iostream>
#include<afx.h>
#include<string.h>
using namespace std;
class Student
{
public:
    char m_strName[10];
    char m_Sex[6];
    int m_nAge;
    char m_strDept[20];
    float m_math;
    Student(){}
    Student(char *name,char *sex,int age,char *dept,float math);
    void SaveStudent(CFile * fp){fp->Write(this,sizeof(Student));}
    void ReadStudent(CFile * fp){fp->Read(this,sizeof(Student));}
    void ShowMe(){
    cout<<m_strName<<"\t"<<m_Sex<<"\t"<<m_nAge<<"\t";
    cout<<m_strDept<<"\t"<<m_math<<endl;}
};
Student::Student(char *name,char *sex,int age,char *dept,float salary)
{
    strcpy(m_strName,name);
    strcpy(m_Sex,sex);
    m_nAge=age;
    strcpy(m_strDept,dept);
    m_math=salary;
}


void main()
{
    int count=0;
    Student stu[50];
    int i,j,age;
    float salary;
    CFile myfile;
    CFileException e;
    char name[10],sex[6],dept[20];
    for(;;)
    {
        cout<<"1.显示所有  2.增加学生 3.删除学生";
        cout<<"4.存储信息  5.读取信息 6.退出\n ";
        cout<<"请输入选项编号：";
        cin>>i;
        switch(i){
        case 1:
              cout<<endl<<"_______________________________________"<<endl;
                   for(i=0;i<count;i++)
                { 
                    cout<<"  "<<i+1<<"\t";
                    stu[i].ShowMe();
                }
               cout<<"_____________________________________"<<endl;
        break;
        case 2:
            if(count<50){
                i=count++;
                cout<<"请依次输入姓名，性别，年龄，所在系部,数学成绩:\n";
                cin>>name>>sex>>age>>dept>>salary;
                stu[i]=Student(name,sex,age,dept,salary);
                strcpy(stu[i].m_strDept,dept);
                stu[i].m_math=salary;
             }
            else {cout<<"储存空间已满";}
             break;
        case 3:
            cout<<"输入要删除的学生号:\t";
                cin>>i;
            if(i<=count&&i>0)
            {for(j=i;j<count;j++)  {stu[j-1]=stu[j];}
            count--;
            cout<<"\n--记录已删除--\n\n";
            }
            else{cout<<"输入错误";}
            break;
        case 4:
            myfile.Open("emp_Rec",CFile::modeWrite|CFile::modeCreate,&e);
            myfile.Write(&count,sizeof(count));
            for(j=0;j<count;j++) stu[j].SaveStudent(& myfile);
            cout<<"\n--学生信息已保存--\n\n";
            break;
        case 5:
            if(myfile.Open("em_Rec",CFile::modeRead,&e))
            {
                myfile.Read(&count,sizeof(count));
                for(j=0;j<count;j++)  stu[j].ReadStudent(& myfile);
                myfile.Close();
                cout<<"\n--学生信息已读入--\n\n";
            }
            else { cout<<"\n--文件打开失败--\n\n";}
            break;
        default:
                return ;
                }
        }
}