[C/C++]结课作业-学生管理系统

浅浅的花香味﹌ 2024-04-24 20:32 72阅读 0赞

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#ifndef OOP_PROJECT_STUDENT_H
    #define OOP_PROJECT_STUDENT_H
    #define NAME_MAX 20
    #define STU_MAX 100
    #include<iostream>
    using namespace std;
    class Student {
    public:
        static int numStudent;
        void Input(Student stu[]);   //输入学生成绩
        void Statistic(Student stu[]);  //统计数据
        void Lookup(Student stu[]);  //查找学生成绩
        void Modify(Student stu[]);  //修改学生成绩
        void Delete(Student stu[]);  //删除学生成绩
        void Output(Student stu[]);  //显示全部学生成绩
        void Sort(Student stu[]);//排序
        void Sling(Student stu[]);   //查找挂科
    private:
        int num;  //学号
        char name[NAME_MAX];  //姓名
        char class_0[NAME_MAX];  //班级
        float elec;  //电子成绩
        float c_program;  //C++成绩
        float english;  //英语成绩
        float math;  //高等数学成绩
        float physics;  //物理成绩
        float sport;  //体育
        float polity;  //政治
        float average;  //平均分
        bool CheckScore(float score);
    };
    #endif //OOP_PROJECT_STUDENT_H

student.cpp

#include <cstring>
    #include "Student.h"
    int Student::numStudent = 0;
    //输入学生信息
    void Student::Input(Student *stu) {
       char sign = 0;
       int c = 0;
       cout << endl << "======>>    请输入学生成绩    <<======" << endl;
       while (sign != 'n' && sign != 'N') {
           cout << "班级：";
           cin >> stu[Student::numStudent].class_0;
           loop:    //循环
           cout << "学号：";
            cin >> stu[Student::numStudent].num;
            for(int k = 0;k<numStudent;k++){
                if (stu[Student::numStudent].num == stu[k].num){
                    cout << "您输入的学号已存在！请重新输入。" << endl;
                    goto loop;   //继续执行循环
                }
            }
    
           cout << "姓名：";
         cin >> stu[Student::numStudent].name;
    
           cout << "电子技术成绩：";
           cin >> stu[Student::numStudent].elec;
           while (!CheckScore(stu[Student::numStudent].elec)){
               cout << " 对不起，请输入1-100之间的数字！！\n";
               cout << "电子技术成绩：";
               cin >> stu[Student::numStudent].elec;
           }
    
           cout << "大学英语成绩：";
           cin >> stu[Student::numStudent].english;
           while (!CheckScore(stu[Student::numStudent].english)){
               cout << " 对不起，请输入1-100之间的数字！！\n";
               cout << "大学英语成绩：";
               cin >> stu[Student::numStudent].english;
           }
    
           cout << "C++程序设计成绩：";
           cin >> stu[Student::numStudent].c_program;
           while (!CheckScore(stu[Student::numStudent].c_program)){
               cout << " 对不起，请输入1-100之间的数字！！\n";
               cout << "C++程序设计成绩：";
               cin >> stu[Student::numStudent].c_program;
           }
    
            cout << "政治成绩：";
            cin >> stu[Student::numStudent].polity;
           while (!CheckScore(stu[Student::numStudent].polity)){
               cout << " 对不起，请输入1-100之间的数字！！\n";
               cout << "政治成绩：";
               cin >> stu[Student::numStudent].polity;
           }
    
    
              cout << "大学体育成绩：";
            cin >> stu[Student::numStudent].sport;
           while (!CheckScore(stu[Student::numStudent].sport)){
               cout << " 对不起，请输入1-100之间的数字！！\n";
               cout << "大学体育成绩：";
               cin >> stu[Student::numStudent].sport;
           }
    
        cout << "高等数学成绩：";
       cin >> stu[Student::numStudent].math;
           while (!CheckScore(stu[Student::numStudent].math)){
               cout << " 对不起，请输入1-100之间的数字！！\n";
               cout << "高等数学成绩：";
               cin >> stu[Student::numStudent].math;
           }
    
           cout << "物理成绩：";
           cin >> stu[Student::numStudent].physics;
           while (!CheckScore(stu[Student::numStudent].physics)){
               cout << " 对不起，请输入1-100之间的数字！！\n";
               cout << "物理成绩：";
               cin >> stu[Student::numStudent].physics;
           }
    
           stu[Student::numStudent].average = (stu[Student::numStudent].elec + stu[Student::numStudent].c_program + stu[Student::numStudent].physics + stu[Student::numStudent].english + stu[Student::numStudent].math +
                              stu[Student::numStudent].sport + stu[Student::numStudent].polity) / 7;
          cout << " 平均分为：" << stu[Student::numStudent].average << endl;
          cout << "提示：是否继续写入学生成绩 ?(y/n)";
           cin >> sign;
           Student::numStudent++;
       }
    
    }
    统计信息
    void Student::Statistic(Student *stu) {
        cout << endl << "\t\t================>>  \t  输出学生统计数据  \t  <<===================\t\n" << endl;
        cout << "-------------------------------------------------------------------------------------------------------" << endl;
        cout << "班级" << "\t\t" << "学号" << "\t" << "姓名" << "\t\t" << "电子" << "\t" << "C++" << "\t" << "物理" << "\t"
             << "英语" << "\t" << "数学" << "\t" << "体育" << "\t"<< "政治" << "\t" << "平均分" << endl;
        cout << "--------------------------------------------------------------------------------------------------------" << endl;
        for (int i = 0; i < Student::numStudent; i++)
        {
            cout << "----------------------------------------------------------------------------------------------------" << endl;
            cout << stu[i].class_0 << "\t\t" << stu[i].num << "\t" << stu[i].name << "\t\t"
                 << stu[i].elec << "\t" << stu[i].c_program << "\t" << stu[i].physics << "\t"
                 << stu[i].english << "\t" << stu[i].math << "\t" << stu[i].sport << "\t"
                 << stu[i].polity << "\t" << stu[i].average << endl;
        }
    }
    //查询学生信息
    void Student::Lookup(Student *stu) {
       int s;
        cout << endl << "======>>    查找学生成绩    <<======" << endl;
        cout << "请输入要查找学生的学号：";
        cin>>s;
        for(int i = 0 ;i<Student::numStudent;i++){
            if(stu[i].num == s){
                cout << "----------------------------" << endl;
                cout << "班级：" << stu[i].class_0 << endl;
                cout << "学号：" << stu[i].num << endl;
                cout << "姓名：" << stu[i].name << endl;
                cout << "电子技术：" << stu[i].elec << endl;
                cout << "C++程序设计：" << stu[i].c_program << endl;
                cout << "物理：" << stu[i].physics << endl;
                cout << "大学英语：" << stu[i].english << endl;
                cout << "高等数学：" << stu[i].math << endl;
                cout << "大学体育：" << stu[i].sport << endl;
                cout << "政治：" << stu[i].polity << endl;
                cout << "平均分：" << stu[i].average << endl;
                return;
            }
        }
        cout<<"未找到该学生信息!"<<endl;
    }
    //修改学生信息
    void Student::Modify(Student *stu) {
        int s;
        cout << endl << "======>>    修改学生成绩    <<======" << endl;
        cout << "请输入要修改成绩学生的学号：";
        cin >> s;
        cout<<(stu[1]).math<<endl;
        for(int i = 0 ;i<Student::numStudent;i++){
            if((stu[i]).num == s){
                cout<<"找到该学生了,请重新输入该学生成绩："<<endl;
                cout<<"学生学号不能被修改!"<<endl;
                cout << "学生班级：";
                cin >> (stu[i]).class_0;
                cout << "姓名：";
                cin >> (stu[i]).name;
                cout << "电子技术成绩：";
                cin >> (stu[i]).elec;
                cout << "C++成绩：";
                cin >> (stu[i]).c_program;
                cout << "物理成绩：";
                cin >> (stu[i]).physics;
                cout << "大学英语成绩：";
                cin >> (stu[i]).english;
                cout << "高等数学成绩：";
                cin >> (stu[i]).math;
                cout << "大学体育成绩：";
                cin >> (stu[i]).sport;
                cout << "政治：";
                cin >> (stu[i]).polity;
                (stu[i]).average = ((stu[i]).elec + (stu[i]).c_program + (stu[i]).physics +
                        (stu[i]).english + (stu[i]).math + (stu[i]).sport + (stu[i]).polity) / 7;
                cout<<"修改成功"<<endl;
            }
        }
    }
    //删除学生信息
    void Student::Delete(Student *stu) {
        int s,j;
        char c = 0;
        cout << endl << "======>>    删除学生成绩    <<======" << endl;
        cout << "请输入要删除的学生的学号：";
        cin >> s;
        for(int i = 0 ;i<Student::numStudent;i++){
            if(stu[i].num == s){
                cout<<"学生已找到,是否删除(y/n):";
                cin>>c;
                if(c == 'y'||c =='Y'){
                    for (j = i; j < Student::numStudent - 1; j++)
                    {
                        stu[j] = stu[j+1];//调用默认拷贝构造函数
                    }
                    cout << "======>>    提示：已成功删除！" << endl;
                    Student::numStudent--;
                    return;
                }
            }
        }
    }
    //输出所有学生信息
    void Student::Output(Student *stu) {
        cout << endl << "======>>    显示全部学生成绩    <<======" << endl;
        if (Student::numStudent == 0) {
            cout << "没有记录"<<endl;
        }
        else {
            cout << "------------------------------------------------------------------------------------" << endl;
            cout << "班级" << "\t" << "学号" << "\t" << "姓名" << "\t"
                 << "电子" << "\t" << "C++" << "\t" << "物理" << "\t"
                 << "英语" << "\t" << "数学" << "\t" << "体育" << "\t"
                 << "政治" << "\t" << "平均分" << endl;
            cout << "------------------------------------------------------------------------------------" << endl;
            for (int i = 0; i < Student::numStudent; i++) {
                cout << stu[i].class_0 << "\t" << stu[i].num << "\t" << stu[i].name << "\t"
                     << stu[i].elec << "\t" << stu[i].c_program << "\t" << stu[i].physics << "\t"
                     << stu[i].english << "\t" << stu[i].math << "\t" << stu[i].sport << "\t"
                     << stu[i].polity << "\t" << stu[i].average << endl;
            }
            cout << "------------------------------------------------------------------------------------" << endl;
        }
    }
    //排序管理界面
    int page()
    {
        int c;
        do {
            cout << "******************************************************" << endl;
            cout << "----------------欢迎查看各科成绩排名----------------" << endl;
            cout << "***************************************************" << endl;
            cout << "    *          【1】电子技术成绩排名              *    " << endl;
            cout << "    *          【2】C++成绩排名                   *    " << endl;
            cout << "    *          【3】物理成绩排名                  *    " << endl;
            cout << "    *          【4】英语成绩排名                  *    " << endl;
            cout << "    *          【5】高等数学成绩排名              *    " << endl;
            cout << "    *          【6】体育成绩排名                  *    " << endl;
            cout << "    *          【7】政治成绩排名                  *    " << endl;
            cout << "    *          【8】平均分排名                    *    " << endl;
            cout << "    *          【0】退出                          *    " << endl;
            cout << "***************************************************" << endl;
            cout << "请选择您的操作 (0-8):" << endl;
            cin>>c;
        } while (c<0||c>9);
        return c;
    }
    //主页面
    int menu() {
        int c;
        do {
            cout << "******************************************************" << endl;
            cout << "------------欢迎使用高校学生成绩信息管理系统-----------" << endl;
            cout << "******************************************************" << endl;
            cout << "----------------欢迎使用学生成绩管理系统---------------" << endl;
            cout << "    *          【1】输入学生成绩                  *    " << endl;
            cout << "    *          【2】显示统计数据                  *    " << endl;
            cout << "    *          【3】查找学生成绩                  *    " << endl;
            cout << "    *          【4】修改学生成绩                  *    " << endl;
            cout << "    *          【5】删除学生成绩                  *    " << endl;
            cout << "    *          【6】按各科成绩排列                *    " << endl;
            cout << "    *          【7】显示学生成绩                  *    " << endl;
            cout << "    *          【8】显示学生挂科情况              *    " << endl;
            cout << "    *          【0】退出管理系统                  *    " << endl;
            cout << "******************************************************" << endl;
            cout << "请选择您的操作 (0-8):" << endl;
            cin>>c;
        } while (c<0||c>=9);
        return c;
    }
    //排序
    void Student::Sort(Student *stu) {
    //按学科成绩排
        int res;
        while(1)
        {
            res = page();  //调用page()函数
            switch (res)
            {
                case 1:
                    for (int i = 0; i < Student::numStudent - 1; i++)
                        for (int j = 0; j < Student::numStudent - 1; j++)
                            if (stu[j].elec < stu[j + 1].elec) {
                                Student temp = stu[j];
                                stu[j] = stu[j + 1];
                                stu[j + 1] = temp;
                            }
                    Output(stu);
                    break;
                case 2:
                    for (int i = 0; i < Student::numStudent - 1; i++)
                        for (int j = 0; j < Student::numStudent - 1; j++)
                            if (stu[j].c_program < stu[j + 1].c_program) {
                                Student temp = stu[j];
                                stu[j] = stu[j + 1];
                                stu[j + 1] =temp;
                            }
                    Output(stu);
                    break;
                case 3:
                    for (int i = 0; i < Student::numStudent - 1; i++)
                        for (int j = 0; j < Student::numStudent - 1; j++)
                            if (stu[j].physics < stu[j + 1].physics) {
                                Student temp = stu[j];
                                stu[j] = stu[j + 1];
                                stu[j + 1] =temp;
                            }
                    Output(stu);
                    break;
                case 4:
                    for (int i = 0; i < Student::numStudent - 1; i++)
                        for (int j = 0; j < Student::numStudent - 1; j++)
                            if (stu[j].english < stu[j + 1].english) {
                                Student temp = stu[j];
                                stu[j] = stu[j + 1];
                                stu[j + 1] =temp;
                            }
                    Output(stu);
                    break;
                case 5:
                    for (int i = 0; i < Student::numStudent - 1; i++)
                        for (int j = 0; j < Student::numStudent - 1; j++)
                            if (stu[j].math < stu[j + 1].math) {
                                Student temp = stu[j];
                                stu[j] = stu[j + 1];
                                stu[j + 1] =temp;
                            }
                    Output(stu);
                    break;
                case 6:
                    for (int i = 0; i < Student::numStudent - 1; i++)
                        for (int j = 0; j < Student::numStudent - 1; j++)
                            if (stu[j].sport < stu[j + 1].sport) {
                                Student temp = stu[j];
                                stu[j] = stu[j + 1];
                                stu[j + 1] =temp;
                            }
                    Output(stu);
                    break;
                case 7:
                    for (int i = 0; i < Student::numStudent - 1; i++)
                        for (int j = 0; j < Student::numStudent - 1; j++)
                            if (stu[j].polity < stu[j + 1].polity) {
                                Student temp = stu[j];
                                stu[j] = stu[j + 1];
                                stu[j + 1] =temp;
                            }
                    Output(stu);
                    break;
                case 8:
                    for (int i = 0; i < Student::numStudent - 1; i++)
                        for (int j = 0; j < Student::numStudent - 1; j++)
                            if (stu[j].average < stu[j + 1].average) {
                                Student temp = stu[j];
                                stu[j] = stu[j + 1];
                                stu[j + 1] =temp;
                            }
                    Output(stu);
                    break;
                case 0:
                    cout << endl << "=============正在返回上一级==========\n" << endl;
                    menu();
                    return;
            }
        }
    }
    //检测成绩输入范围
    bool Student::CheckScore(float score) {
        if(score>-1 && score<=100)
            return true;
        else
        return false;
    }
    //挂科情况
    void Student::Sling(Student *stu) {
        int i, j, k,count ;
        cout << "                                                         " << endl;
        cout << "**********************学生挂科情况*********************" << endl;
        cout << "                                                         " << endl;
        for (i = 0; i < Student::numStudent; i++)
        {
            for (j = 0; j < 6; j++)
            {
                count = 0;
                if (stu[i].elec < 60)  count++;
                if (stu[i].c_program < 60)  count++;
                if (stu[i].physics < 60)  count++;
                if (stu[i].english < 60)  count++;
                if (stu[i].math < 60)  count++;
                if (stu[i].sport < 60)  count++;
                if (stu[i].polity < 60)  count++;
            }
            cout << stu[i].name << "    " << "有" << count << "门课挂科" << endl;
            cout << "--------------------------------------------------------" << endl;
        }
    
    }
    
    int main(){
        Student* stu = new Student[STU_MAX];
        Student StartUp;
        while (1)   //无限循环
        {
            int res = menu();
            switch (res)   //调用menu()函数
            {
                case 1:
                    StartUp.Input(stu);
                    break;
                case 2:
                    StartUp.Statistic(stu);
                    break;
                case 3:
                    StartUp.Lookup(stu);
                    break;
                case 4:
                    StartUp.Modify(stu);
                    break;
                case 5:
                    StartUp.Delete(stu);
                    break;
                case 6:
                    StartUp.Sort(stu);
                    break;
                case 7:
                    StartUp.Output(stu);
                    break;
                case 8:
                    StartUp.Sling(stu);
                    break;
                case 0:
                    cout << endl << "================感谢您使用学生成绩管理系统==============\n" << endl;
                    exit(0);
            }
        }
        return 0;
    }

开发环境:Windows

编辑器:clion

[Link 1]: https://blog.csdn.net/weixin_73865721?spm=1010.2135.3001.5343
[C_C]: https://blog.csdn.net/weixin_73865721?type=blog