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#pragma once
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#pragma once
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/*************************************************
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Copyright (C), 2010, Tyut
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File name: GradateManager.h
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Author: gaobaolu Version: 1.0 Date: 2010.6.28
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Description: 研究生管理类
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*************************************************/
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//#ifndef UNDERGRADUATE_MANAGER_H
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#define UNDERGRADUATE_MANAGER_H
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#include <iostream>
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#include <string>
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#include <fstream>
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#include"graduate.h"
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using namespace std;
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/* Define a Class : GradateManager 研究生管理类*/
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class GradateManager
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{
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private:
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int top; //记录指针
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Graduate graduates[100]; //研究生记录
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public:
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GradateManager();//构造函数,将Undergraduate.txt读到undergraduates[]中
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int queryByNo(string sno);//按研究生号查找 //找到：返回数组下标//没找到：返回-1
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void clearStudent(); //删除所有研究生信息
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int addStudent(Graduate s); //添加研究生,需要先查找是否存在
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int modifyStudent(string sno); //修改学生信息 ,需要先查找是否存在
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int deleteStudent(string sno);//删除研究生，删除前先查找其是否存在
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int queryStudent(string sno);//查找研究生,查到则显示,否则提示未查到
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void displayAll();//输出所有研究生信息
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void dataManage(); //研究生库维护
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void dataSave();
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void dataRead();
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~GradateManager();//析构函数,将undergraduates[]写入Undergraduate.txt文件中
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};
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//构造函数,将Undergraduate.txt读到undergraduates[]中
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GradateManager::GradateManager()
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{
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dataRead();
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}
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//按研究生号查找
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//找到：返回数组下标
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//没找到：返回-1
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int GradateManager::queryByNo(string sno)
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{
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for (int i = 0; i <= top; i++)
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if (graduates[i].getStudentNo() == sno)
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return i;
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return -1;
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}
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//删除所有本科生信息
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void GradateManager::clearStudent()
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{
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top = -1;
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}
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//添加研究生,需要先查找是否存在
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int GradateManager::addStudent(Graduate s)
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{
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int p = queryByNo(s.getStudentNo());
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if (p == -1)
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{
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top++;
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graduates[top] = s;
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dataSave();//保存
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return 1;
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}
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else
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{
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cout << "--------->此学生已经存在 !<----------" << endl << endl;
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return 0;
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}
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}
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//修改研究生，删除前先查找其是否存在
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int GradateManager::modifyStudent(string sno)
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{
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int p = queryByNo(sno);
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if (p == -1)
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{
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cout << "--------->此学生不存在 !<----------" << endl << endl;
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return 0;
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}
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else
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{
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cout << "请输入该生的新信息: " << endl << endl;
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graduates[p].inputData();
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dataSave();//保存
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return 1;
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}
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}
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//删除研究生，删除前先查找其是否存在
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int GradateManager::deleteStudent(string sno)
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{
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int p = queryByNo(sno);
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if (p == -1)
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{
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cout << "--------->此学生不存在 !<----------" << endl << endl;
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return 0;
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}
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else
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{
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for (int i = p; i < top; i++)
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graduates[i] = graduates[i + 1];
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top--;
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cout << "--------->删除完成!<----------" << endl << endl;
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dataSave();//保存
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return 1;
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}
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}
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//查找研究生
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int GradateManager::queryStudent(string sno)
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{
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int p = queryByNo(sno);
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if (p == -1)
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{
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cout << "--------->此学生不存在 !<----------" << endl << endl;
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return 0;
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}
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else
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{
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cout << "--------->此学生存在:<----------" << endl << endl;
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graduates[p].displayDetails();
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return 1;
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}
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}
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//输出所有研究生信息
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void GradateManager::displayAll()
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{
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for (int i = 0; i <= top; i++)
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{
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cout << "--------第" << i << "个学生情况----------" << endl << endl;
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graduates[i].displayDetails();
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}
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}
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//析构函数,将undergraduates[]写入Undergraduate.txt文件中
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GradateManager::~GradateManager()
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{
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dataSave();
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}
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void GradateManager::dataManage()
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{
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int choice = 1;
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string sstudentNo;
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Graduate s;
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while (choice != 0)
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{
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cout << "********************************************" << endl;
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cout << "\t\t研究生维护\n";
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cout << "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" << endl;
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cout << "\n \t\t 1:新增 ";
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cout << "\n \t\t 2:修改 ";
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cout << "\n \t\t 3:删除 ";
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cout << "\n \t\t 4:查找 ";
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cout << "\n \t\t 5:显示 ";
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cout << "\n \t\t 6:全部删除 ";
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cout << "\n \t\t 0:退出 ";
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cout << endl;
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cout << "*********************************************" << endl;
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cout << "请选择：" << endl;
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cin >> choice;
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switch (choice)
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{
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case 1:
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s.inputData();
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addStudent(s);
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break;
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case 2:
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cout << " 请输入学号:";
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cin >> sstudentNo;
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modifyStudent(sstudentNo);
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break;
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case 3:
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cout << " 请输入学号:";
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cin >> sstudentNo;
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deleteStudent(sstudentNo);
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break;
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case 4:
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cout << " 请输入学号:";
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cin >> sstudentNo;
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queryStudent(sstudentNo);
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break;
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case 5:
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displayAll();
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break;
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case 6:
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clearStudent();
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break;
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default:
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break;
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}
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}
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}
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void GradateManager::dataSave()//存储资料函数,将read[]写入Undergraduate.txt文件中
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{
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fstream file("C:\\Undergraduate.dat", ios::out);
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for (int i = 0; i <= top; i++)
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file.write((char*)&graduates[i], sizeof(graduates[i]));
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file.close();
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}
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void GradateManager::dataRead() //构造函数,将Undergraduate.txt读到read[]中
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{
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Graduate s;
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top = -1;
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fstream file("C:\\graduate.dat", ios::in);
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while (1)
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{
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file.read((char*)&s, sizeof(s));
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if (!file) break;
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top++;
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graduates[top] = s;
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}
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file.close();
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}
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//#endif //UNDERGRADUATE_MANAGER_H
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