[C/C++]结课作业-学生管理系统

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  1. #ifndef OOP_PROJECT_STUDENT_H
  2. #define OOP_PROJECT_STUDENT_H
  3. #define NAME_MAX 20
  4. #define STU_MAX 100
  5. #include<iostream>
  6. using namespace std;
  7. class Student {
  8. public:
  9.     static int numStudent;
  10.     void Input(Student stu[]);   //输入学生成绩
  11.     void Statistic(Student stu[]);  //统计数据
  12.     void Lookup(Student stu[]);  //查找学生成绩
  13.     void Modify(Student stu[]);  //修改学生成绩
  14.     void Delete(Student stu[]);  //删除学生成绩
  15.     void Output(Student stu[]);  //显示全部学生成绩
  16.     void Sort(Student stu[]);//排序
  17.     void Sling(Student stu[]);   //查找挂科
  18. private:
  19.     int num;  //学号
  20.     char name[NAME_MAX];  //姓名
  21.     char class_0[NAME_MAX];  //班级
  22.     float elec;  //电子成绩
  23.     float c_program;  //C++成绩
  24.     float english;  //英语成绩
  25.     float math;  //高等数学成绩
  26.     float physics;  //物理成绩
  27.     float sport;  //体育
  28.     float polity;  //政治
  29.     float average;  //平均分
  30.     bool CheckScore(float score);
  31. };
  32. #endif //OOP_PROJECT_STUDENT_H

student.cpp

  1. #include <cstring>
  2. #include "Student.h"
  3. int Student::numStudent = 0;
  4. //输入学生信息
  5. void Student::Input(Student *stu) {
  6.    char sign = 0;
  7.    int c = 0;
  8.    cout << endl << "======>>    请输入学生成绩    <<======" << endl;
  9.    while (sign != 'n' && sign != 'N') {
  10.        cout << "班级：";
  11.        cin >> stu[Student::numStudent].class_0;
  12.        loop:    //循环
  13.        cout << "学号：";
  14.         cin >> stu[Student::numStudent].num;
  15.         for(int k = 0;k<numStudent;k++){
  16.             if (stu[Student::numStudent].num == stu[k].num){
  17.                 cout << "您输入的学号已存在！请重新输入。" << endl;
  18.                 goto loop;   //继续执行循环
  19.             }
  20.         }
  22.        cout << "姓名：";
  23.      cin >> stu[Student::numStudent].name;
  25.        cout << "电子技术成绩：";
  26.        cin >> stu[Student::numStudent].elec;
  27.        while (!CheckScore(stu[Student::numStudent].elec)){
  28.            cout << " 对不起，请输入1-100之间的数字！！\n";
  29.            cout << "电子技术成绩：";
  30.            cin >> stu[Student::numStudent].elec;
  31.        }
  33.        cout << "大学英语成绩：";
  34.        cin >> stu[Student::numStudent].english;
  35.        while (!CheckScore(stu[Student::numStudent].english)){
  36.            cout << " 对不起，请输入1-100之间的数字！！\n";
  37.            cout << "大学英语成绩：";
  38.            cin >> stu[Student::numStudent].english;
  39.        }
  41.        cout << "C++程序设计成绩：";
  42.        cin >> stu[Student::numStudent].c_program;
  43.        while (!CheckScore(stu[Student::numStudent].c_program)){
  44.            cout << " 对不起，请输入1-100之间的数字！！\n";
  45.            cout << "C++程序设计成绩：";
  46.            cin >> stu[Student::numStudent].c_program;
  47.        }
  49.         cout << "政治成绩：";
  50.         cin >> stu[Student::numStudent].polity;
  51.        while (!CheckScore(stu[Student::numStudent].polity)){
  52.            cout << " 对不起，请输入1-100之间的数字！！\n";
  53.            cout << "政治成绩：";
  54.            cin >> stu[Student::numStudent].polity;
  55.        }
  58.           cout << "大学体育成绩：";
  59.         cin >> stu[Student::numStudent].sport;
  60.        while (!CheckScore(stu[Student::numStudent].sport)){
  61.            cout << " 对不起，请输入1-100之间的数字！！\n";
  62.            cout << "大学体育成绩：";
  63.            cin >> stu[Student::numStudent].sport;
  64.        }
  66.     cout << "高等数学成绩：";
  67.    cin >> stu[Student::numStudent].math;
  68.        while (!CheckScore(stu[Student::numStudent].math)){
  69.            cout << " 对不起，请输入1-100之间的数字！！\n";
  70.            cout << "高等数学成绩：";
  71.            cin >> stu[Student::numStudent].math;
  72.        }
  74.        cout << "物理成绩：";
  75.        cin >> stu[Student::numStudent].physics;
  76.        while (!CheckScore(stu[Student::numStudent].physics)){
  77.            cout << " 对不起，请输入1-100之间的数字！！\n";
  78.            cout << "物理成绩：";
  79.            cin >> stu[Student::numStudent].physics;
  80.        }
  82.        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 +
  83.                           stu[Student::numStudent].sport + stu[Student::numStudent].polity) / 7;
  84.       cout << " 平均分为：" << stu[Student::numStudent].average << endl;
  85.       cout << "提示：是否继续写入学生成绩 ?(y/n)";
  86.        cin >> sign;
  87.        Student::numStudent++;
  88.    }
  90. }
  91. 统计信息
  92. void Student::Statistic(Student *stu) {
  93.     cout << endl << "\t\t================>>  \t  输出学生统计数据  \t  <<===================\t\n" << endl;
  94.     cout << "-------------------------------------------------------------------------------------------------------" << endl;
  95.     cout << "班级" << "\t\t" << "学号" << "\t" << "姓名" << "\t\t" << "电子" << "\t" << "C++" << "\t" << "物理" << "\t"
  96.          << "英语" << "\t" << "数学" << "\t" << "体育" << "\t"<< "政治" << "\t" << "平均分" << endl;
  97.     cout << "--------------------------------------------------------------------------------------------------------" << endl;
  98.     for (int i = 0; i < Student::numStudent; i++)
  99.     {
  100.         cout << "----------------------------------------------------------------------------------------------------" << endl;
  101.         cout << stu[i].class_0 << "\t\t" << stu[i].num << "\t" << stu[i].name << "\t\t"
  102.              << stu[i].elec << "\t" << stu[i].c_program << "\t" << stu[i].physics << "\t"
  103.              << stu[i].english << "\t" << stu[i].math << "\t" << stu[i].sport << "\t"
  104.              << stu[i].polity << "\t" << stu[i].average << endl;
  105.     }
  106. }
  107. //查询学生信息
  108. void Student::Lookup(Student *stu) {
  109.    int s;
  110.     cout << endl << "======>>    查找学生成绩    <<======" << endl;
  111.     cout << "请输入要查找学生的学号：";
  112.     cin>>s;
  113.     for(int i = 0 ;i<Student::numStudent;i++){
  114.         if(stu[i].num == s){
  115.             cout << "----------------------------" << endl;
  116.             cout << "班级：" << stu[i].class_0 << endl;
  117.             cout << "学号：" << stu[i].num << endl;
  118.             cout << "姓名：" << stu[i].name << endl;
  119.             cout << "电子技术：" << stu[i].elec << endl;
  120.             cout << "C++程序设计：" << stu[i].c_program << endl;
  121.             cout << "物理：" << stu[i].physics << endl;
  122.             cout << "大学英语：" << stu[i].english << endl;
  123.             cout << "高等数学：" << stu[i].math << endl;
  124.             cout << "大学体育：" << stu[i].sport << endl;
  125.             cout << "政治：" << stu[i].polity << endl;
  126.             cout << "平均分：" << stu[i].average << endl;
  127.             return;
  128.         }
  129.     }
  130.     cout<<"未找到该学生信息!"<<endl;
  131. }
  132. //修改学生信息
  133. void Student::Modify(Student *stu) {
  134.     int s;
  135.     cout << endl << "======>>    修改学生成绩    <<======" << endl;
  136.     cout << "请输入要修改成绩学生的学号：";
  137.     cin >> s;
  138.     cout<<(stu[1]).math<<endl;
  139.     for(int i = 0 ;i<Student::numStudent;i++){
  140.         if((stu[i]).num == s){
  141.             cout<<"找到该学生了,请重新输入该学生成绩："<<endl;
  142.             cout<<"学生学号不能被修改!"<<endl;
  143.             cout << "学生班级：";
  144.             cin >> (stu[i]).class_0;
  145.             cout << "姓名：";
  146.             cin >> (stu[i]).name;
  147.             cout << "电子技术成绩：";
  148.             cin >> (stu[i]).elec;
  149.             cout << "C++成绩：";
  150.             cin >> (stu[i]).c_program;
  151.             cout << "物理成绩：";
  152.             cin >> (stu[i]).physics;
  153.             cout << "大学英语成绩：";
  154.             cin >> (stu[i]).english;
  155.             cout << "高等数学成绩：";
  156.             cin >> (stu[i]).math;
  157.             cout << "大学体育成绩：";
  158.             cin >> (stu[i]).sport;
  159.             cout << "政治：";
  160.             cin >> (stu[i]).polity;
  161.             (stu[i]).average = ((stu[i]).elec + (stu[i]).c_program + (stu[i]).physics +
  162.                     (stu[i]).english + (stu[i]).math + (stu[i]).sport + (stu[i]).polity) / 7;
  163.             cout<<"修改成功"<<endl;
  164.         }
  165.     }
  166. }
  167. //删除学生信息
  168. void Student::Delete(Student *stu) {
  169.     int s,j;
  170.     char c = 0;
  171.     cout << endl << "======>>    删除学生成绩    <<======" << endl;
  172.     cout << "请输入要删除的学生的学号：";
  173.     cin >> s;
  174.     for(int i = 0 ;i<Student::numStudent;i++){
  175.         if(stu[i].num == s){
  176.             cout<<"学生已找到,是否删除(y/n):";
  177.             cin>>c;
  178.             if(c == 'y'||c =='Y'){
  179.                 for (j = i; j < Student::numStudent - 1; j++)
  180.                 {
  181.                     stu[j] = stu[j+1];//调用默认拷贝构造函数
  182.                 }
  183.                 cout << "======>>    提示：已成功删除！" << endl;
  184.                 Student::numStudent--;
  185.                 return;
  186.             }
  187.         }
  188.     }
  189. }
  190. //输出所有学生信息
  191. void Student::Output(Student *stu) {
  192.     cout << endl << "======>>    显示全部学生成绩    <<======" << endl;
  193.     if (Student::numStudent == 0) {
  194.         cout << "没有记录"<<endl;
  195.     }
  196.     else {
  197.         cout << "------------------------------------------------------------------------------------" << endl;
  198.         cout << "班级" << "\t" << "学号" << "\t" << "姓名" << "\t"
  199.              << "电子" << "\t" << "C++" << "\t" << "物理" << "\t"
  200.              << "英语" << "\t" << "数学" << "\t" << "体育" << "\t"
  201.              << "政治" << "\t" << "平均分" << endl;
  202.         cout << "------------------------------------------------------------------------------------" << endl;
  203.         for (int i = 0; i < Student::numStudent; i++) {
  204.             cout << stu[i].class_0 << "\t" << stu[i].num << "\t" << stu[i].name << "\t"
  205.                  << stu[i].elec << "\t" << stu[i].c_program << "\t" << stu[i].physics << "\t"
  206.                  << stu[i].english << "\t" << stu[i].math << "\t" << stu[i].sport << "\t"
  207.                  << stu[i].polity << "\t" << stu[i].average << endl;
  208.         }
  209.         cout << "------------------------------------------------------------------------------------" << endl;
  210.     }
  211. }
  212. //排序管理界面
  213. int page()
  214. {
  215.     int c;
  216.     do {
  217.         cout << "******************************************************" << endl;
  218.         cout << "----------------欢迎查看各科成绩排名----------------" << endl;
  219.         cout << "***************************************************" << endl;
  220.         cout << "    *          【1】电子技术成绩排名              *    " << endl;
  221.         cout << "    *          【2】C++成绩排名                   *    " << endl;
  222.         cout << "    *          【3】物理成绩排名                  *    " << endl;
  223.         cout << "    *          【4】英语成绩排名                  *    " << endl;
  224.         cout << "    *          【5】高等数学成绩排名              *    " << endl;
  225.         cout << "    *          【6】体育成绩排名                  *    " << endl;
  226.         cout << "    *          【7】政治成绩排名                  *    " << endl;
  227.         cout << "    *          【8】平均分排名                    *    " << endl;
  228.         cout << "    *          【0】退出                          *    " << endl;
  229.         cout << "***************************************************" << endl;
  230.         cout << "请选择您的操作 (0-8):" << endl;
  231.         cin>>c;
  232.     } while (c<0||c>9);
  233.     return c;
  234. }
  235. //主页面
  236. int menu() {
  237.     int c;
  238.     do {
  239.         cout << "******************************************************" << endl;
  240.         cout << "------------欢迎使用高校学生成绩信息管理系统-----------" << endl;
  241.         cout << "******************************************************" << endl;
  242.         cout << "----------------欢迎使用学生成绩管理系统---------------" << endl;
  243.         cout << "    *          【1】输入学生成绩                  *    " << endl;
  244.         cout << "    *          【2】显示统计数据                  *    " << endl;
  245.         cout << "    *          【3】查找学生成绩                  *    " << endl;
  246.         cout << "    *          【4】修改学生成绩                  *    " << endl;
  247.         cout << "    *          【5】删除学生成绩                  *    " << endl;
  248.         cout << "    *          【6】按各科成绩排列                *    " << endl;
  249.         cout << "    *          【7】显示学生成绩                  *    " << endl;
  250.         cout << "    *          【8】显示学生挂科情况              *    " << endl;
  251.         cout << "    *          【0】退出管理系统                  *    " << endl;
  252.         cout << "******************************************************" << endl;
  253.         cout << "请选择您的操作 (0-8):" << endl;
  254.         cin>>c;
  255.     } while (c<0||c>=9);
  256.     return c;
  257. }
  258. //排序
  259. void Student::Sort(Student *stu) {
  260. //按学科成绩排
  261.     int res;
  262.     while(1)
  263.     {
  264.         res = page();  //调用page()函数
  265.         switch (res)
  266.         {
  267.             case 1:
  268.                 for (int i = 0; i < Student::numStudent - 1; i++)
  269.                     for (int j = 0; j < Student::numStudent - 1; j++)
  270.                         if (stu[j].elec < stu[j + 1].elec) {
  271.                             Student temp = stu[j];
  272.                             stu[j] = stu[j + 1];
  273.                             stu[j + 1] = temp;
  274.                         }
  275.                 Output(stu);
  276.                 break;
  277.             case 2:
  278.                 for (int i = 0; i < Student::numStudent - 1; i++)
  279.                     for (int j = 0; j < Student::numStudent - 1; j++)
  280.                         if (stu[j].c_program < stu[j + 1].c_program) {
  281.                             Student temp = stu[j];
  282.                             stu[j] = stu[j + 1];
  283.                             stu[j + 1] =temp;
  284.                         }
  285.                 Output(stu);
  286.                 break;
  287.             case 3:
  288.                 for (int i = 0; i < Student::numStudent - 1; i++)
  289.                     for (int j = 0; j < Student::numStudent - 1; j++)
  290.                         if (stu[j].physics < stu[j + 1].physics) {
  291.                             Student temp = stu[j];
  292.                             stu[j] = stu[j + 1];
  293.                             stu[j + 1] =temp;
  294.                         }
  295.                 Output(stu);
  296.                 break;
  297.             case 4:
  298.                 for (int i = 0; i < Student::numStudent - 1; i++)
  299.                     for (int j = 0; j < Student::numStudent - 1; j++)
  300.                         if (stu[j].english < stu[j + 1].english) {
  301.                             Student temp = stu[j];
  302.                             stu[j] = stu[j + 1];
  303.                             stu[j + 1] =temp;
  304.                         }
  305.                 Output(stu);
  306.                 break;
  307.             case 5:
  308.                 for (int i = 0; i < Student::numStudent - 1; i++)
  309.                     for (int j = 0; j < Student::numStudent - 1; j++)
  310.                         if (stu[j].math < stu[j + 1].math) {
  311.                             Student temp = stu[j];
  312.                             stu[j] = stu[j + 1];
  313.                             stu[j + 1] =temp;
  314.                         }
  315.                 Output(stu);
  316.                 break;
  317.             case 6:
  318.                 for (int i = 0; i < Student::numStudent - 1; i++)
  319.                     for (int j = 0; j < Student::numStudent - 1; j++)
  320.                         if (stu[j].sport < stu[j + 1].sport) {
  321.                             Student temp = stu[j];
  322.                             stu[j] = stu[j + 1];
  323.                             stu[j + 1] =temp;
  324.                         }
  325.                 Output(stu);
  326.                 break;
  327.             case 7:
  328.                 for (int i = 0; i < Student::numStudent - 1; i++)
  329.                     for (int j = 0; j < Student::numStudent - 1; j++)
  330.                         if (stu[j].polity < stu[j + 1].polity) {
  331.                             Student temp = stu[j];
  332.                             stu[j] = stu[j + 1];
  333.                             stu[j + 1] =temp;
  334.                         }
  335.                 Output(stu);
  336.                 break;
  337.             case 8:
  338.                 for (int i = 0; i < Student::numStudent - 1; i++)
  339.                     for (int j = 0; j < Student::numStudent - 1; j++)
  340.                         if (stu[j].average < stu[j + 1].average) {
  341.                             Student temp = stu[j];
  342.                             stu[j] = stu[j + 1];
  343.                             stu[j + 1] =temp;
  344.                         }
  345.                 Output(stu);
  346.                 break;
  347.             case 0:
  348.                 cout << endl << "=============正在返回上一级==========\n" << endl;
  349.                 menu();
  350.                 return;
  351.         }
  352.     }
  353. }
  354. //检测成绩输入范围
  355. bool Student::CheckScore(float score) {
  356.     if(score>-1 && score<=100)
  357.         return true;
  358.     else
  359.     return false;
  360. }
  361. //挂科情况
  362. void Student::Sling(Student *stu) {
  363.     int i, j, k,count ;
  364.     cout << "                                                         " << endl;
  365.     cout << "**********************学生挂科情况*********************" << endl;
  366.     cout << "                                                         " << endl;
  367.     for (i = 0; i < Student::numStudent; i++)
  368.     {
  369.         for (j = 0; j < 6; j++)
  370.         {
  371.             count = 0;
  372.             if (stu[i].elec < 60)  count++;
  373.             if (stu[i].c_program < 60)  count++;
  374.             if (stu[i].physics < 60)  count++;
  375.             if (stu[i].english < 60)  count++;
  376.             if (stu[i].math < 60)  count++;
  377.             if (stu[i].sport < 60)  count++;
  378.             if (stu[i].polity < 60)  count++;
  379.         }
  380.         cout << stu[i].name << "    " << "有" << count << "门课挂科" << endl;
  381.         cout << "--------------------------------------------------------" << endl;
  382.     }
  384. }
  386. int main(){
  387.     Student* stu = new Student[STU_MAX];
  388.     Student StartUp;
  389.     while (1)   //无限循环
  390.     {
  391.         int res = menu();
  392.         switch (res)   //调用menu()函数
  393.         {
  394.             case 1:
  395.                 StartUp.Input(stu);
  396.                 break;
  397.             case 2:
  398.                 StartUp.Statistic(stu);
  399.                 break;
  400.             case 3:
  401.                 StartUp.Lookup(stu);
  402.                 break;
  403.             case 4:
  404.                 StartUp.Modify(stu);
  405.                 break;
  406.             case 5:
  407.                 StartUp.Delete(stu);
  408.                 break;
  409.             case 6:
  410.                 StartUp.Sort(stu);
  411.                 break;
  412.             case 7:
  413.                 StartUp.Output(stu);
  414.                 break;
  415.             case 8:
  416.                 StartUp.Sling(stu);
  417.                 break;
  418.             case 0:
  419.                 cout << endl << "================感谢您使用学生成绩管理系统==============\n" << endl;
  420.                 exit(0);
  421.         }
  422.     }
  423.     return 0;
  424. }

开发环境:Windows

编辑器:clion

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