学生信息

 

头文件

#pragma once
#ifndef ZMR_H
#define ZMR_H
#include <iostream>
#include <fstream>
using namespace std;
const int MAX = 100;
enum zone_type { EST, CST, MST, PST, EDT, CDT, MDT, PDT };
class time
{
public:
    time() {}
    time(int h, int m, int s) :hour(h), minute(m), second(s) {}
    void set(int h, int m, int s);
    void show()const;
public:
    int hour;
    int minute;
    int second;
};
void time::set(int h, int m, int s)
{
    hour = h;
    minute = m;
    second = s;
}
void time::show()const
{
    cout << hour << ":" << minute << ":" << second << " ";
}

class ext_time :public time
{
public:
    ext_time(int h, int m, int s, zone_type z) :time(h, m, s), zone(z) {}
    ext_time();
    void set(int h, int m, int s, zone_type z);
    void show()const;
private:
    zone_type zone;
};
ext_time::ext_time()
{
    zone = EST;
}
void ext_time::set(int h, int m, int s, zone_type z)
{
    time::set(h, m, s);
    zone = z;
}
void ext_time::show()const
{
    static string zones[8]{ "EST","CST","MST","PST","EDT","CDT","MDT","PDT" };
    cout << hour << ":" << minute << ":" << second << " ";
    cout << " " << zones[zone] << " ";
}

class Student
{
public:
    Student(string num, string name, int h,int m,int s,zone_type z);
    Student(){}
    ~Student() {}
    void show_student();
public:
    string Snum;
    string Sname;
    ext_time Stime;
};
void Student::show_student()
{
    cout << "学号：" << Snum << " " << "姓名：" << Sname << " " << "登记时间：";
    Stime.show();
    cout << endl;
}
Student::Student(string num, string name, int h,int m,int s,zone_type z)
{
    Stime.set(h, m, s,z);
    Snum = num;
    Sname = name;
}

class Student_table
{
public:    
    Student_table();
    bool is_empty();
    bool is_full();
    int get_len();
    void show_stu();
    void search_stu(string num);
    void delete_stu(string num);
    void add_stu(string num, string name, int h, int m, int s, zone_type z);
    void alter_stu(string num);
    void write();
    void read();
private:
    int length;
    class Student list[MAX];
};
Student_table::Student_table()
{
    length = 0;
}
bool Student_table::is_empty()
{
    if (length == 0)
        return true;
    else return false;
}
bool Student_table::is_full()
{
    if (length == MAX)
        return true;
    else return false;
}
int Student_table::get_len()
{
    return length;
}
void Student_table::show_stu()
{
    cout << "登记学生数：" << get_len() <<endl;
    for (int i = 0; i != length; i++)
    {
        list[i].show_student();
    }
}
void Student_table::search_stu(string num)
{
    for (int i = 0;i!=length; i++)
    {
        if (num == list[i].Snum)
        {
            list[i].show_student();
            break;
        }
    }
}
void Student_table::delete_stu(string num)
{
    int pos;
    for (int i = 0; i != length; i++)
    {
        if (num == list[i].Snum)
        {
            pos = i;
            break;
        }
    }
    for (int i = pos; i != length; i++)
    {
        list[i] = list[i + 1];
    }
    length--;
}
void Student_table::add_stu(string num, string name, int h, int m, int s, zone_type z)
{
    class Student temp(num, name, h, m, s, z);
    list[length] = temp;
    length++;
}
void Student_table::alter_stu(string num)
{
    for(int i=0;i!=length;i++)
    {
        if (list[i].Snum == num)
        {
            while (1)
            {
                cout << "输入要是修改的项：1.学号，2.姓名，3.登记时间，4.结束修改" << endl;
                int order;
                cin >> order;
                if (order == 1)
                {
                    string num;
                    cout << "修改为：";
                    cin >> num;
                    list[i].Snum = num;
                }
                else if (order == 2)
                {
                    string name;
                    cout << "修改为：";
                    cin >> name;
                    list[i].Sname = name;
                }
                else if (order == 3)
                {
                    int h, m, s;
                    cout << "修改为：" <<endl;
                    cout << "时：";
                    cin >> h;
                    cout << "分：";
                    cin >> m;
                    cout << "秒：";
                    cin >> s;
                    list[i].Stime.set(h, m, s,EST);
                }
                else
                {
                    break;
                }
            }
        }
    }
}
void Student_table::write()
{
    ofstream fout;
    fout.open("information.txt",ios::app);
    if (!fout.fail())
    {
        for (int i = 0; i != length; i++)
        {
            fout << "学号：" << list[i].Snum << " " << "姓名：" << list[i].Sname << " " << "登记时间：" <<
            list[i].Stime.hour << ":" << list[i].Stime.minute << ":" << list[i].Stime.second <<endl;
        }
    }
    fout.close();
}
#endif

源文件

#include <iostream>
#include "zmr.h"
using namespace std;
int main()
{
    class Student_table Stable;        
    string num, name;
    int h, m, s;
    zone_type z = EST;
    while (1)
    {
        cout << "选择功能：1.添加，2.删除，3.查找，4.修改，5.显示表，6.写入文件，8.退出程序"<<endl;
        int order;
        cin >> order;
        if (order == 1)
        {
            cout << "学号：";
            cin >> num;
            cout << "姓名：";
            cin >> name;
            cout << "登记时间" << endl;
            cout << "时：";
            cin >> h;
            cout << "分：";
            cin >> m;
            cout << "秒：";
            cin >> s;
            Stable.add_stu(num, name, h, m, s, z);
            cout << "添加完成" << endl;
        }
        else if (order == 2)
        {
            cout << "输入要删除学生的学号：";
            cin >> num;
            Stable.delete_stu(num);
            cout << "删除完成" << endl;
        }
        else if (order == 3)
        {
            cout << "输入要查找学生的学号：";
            cin >> num;
            Stable.search_stu(num);
            cout << endl;
        }
        else if (order == 4)
        {
            cout << "需要修改信息的学生学号：";
            cin >> num;
            Stable.alter_stu(num);
            cout << "修改完成" << endl;
        }
        else if (order == 5)
        {
            Stable.show_stu();
            cout << endl;
        }
        else if (order == 6)
        {
            Stable.write();
            cout << "读出完毕" << endl;
        }
        else    break;
    }
    return 0;
}