C#實現學生成績管理系統的代碼如何寫

這篇文章主要介紹“C#實現學生成績管理系統的代碼如何寫”，在日常操作中，相信很多人在C#實現學生成績管理系統的代碼如何寫問題上存在疑惑，小編查閱了各式資料，整理出簡單好用的操作方法，希望對大家解答”C#實現學生成績管理系統的代碼如何寫”的疑惑有所幫助！接下來，請跟著小編一起來學習吧！

下面是結果演示

這是登錄及部分添加

繼續添加

繼續添加及輸出成績

學生成績查詢

學生信息修改再輸出

刪除再輸出

0直接退出了

/*
        Author：馬志勇
        date:2020-10-14
*/


using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            //2. 在用戶登錄界面提示用戶輸入用戶名和密碼，并根據用戶名和密碼決定    能否登錄系統。
            //   3. 合法用戶登陸成功后，在屏幕上顯示如下功能菜單：
            //          1.學生成績輸入 2.學生成績輸出 3.學生成績查詢 4.學生成績修改 0.退出系統
            //            提示用戶輸入選擇號，用戶輸入正確的選擇好后執行相應功能。執行完對應功   能后返回功能菜單。

            Console.WriteLine("歡迎來到成績管理系統！");
            while (true) {
                Console.WriteLine("***請輸入賬號：");
                String userName = Console.ReadLine();
                Console.WriteLine("***請輸入密碼：");
                String userPassword = Console.ReadLine();
                if (userName.Equals("123456") && userPassword.Equals("456789"))
                {
                    Console.WriteLine("***賬號密碼正確請進入");
                    break;
                }
                else {
                    Console.WriteLine("賬號密碼不一致，是否重新進入！[1：重新輸入---2：退出]");
                    int n = int.Parse(Console.ReadLine());
                    while (true) {
                        if (n == 1 || n == 2)
                        {
                            break;
                        }
                        else {
                            Console.WriteLine("***序號有誤請重新輸入！");
                            n = int.Parse(Console.ReadLine());
                        }
                    }
                    if (n==2) {
                        Process.GetCurrentProcess().Kill();
                    }
                }
            }

            showView();
            showChoice();

            StudentLinkedList link = new StudentLinkedList();
            
            
            while (true) {
                Console.WriteLine("***請選這些序號 ");
                int n = int.Parse(Console.ReadLine());
                switch (n) {
                    //0.退出系統
                    case 0: {
                            Process.GetCurrentProcess().Kill();
                            break;
                        }
                    //1.學生成績輸入
                    case 1: {
                            Console.WriteLine("***請輸入ID賬號：");
                            int id = int.Parse(Console.ReadLine());
                            Console.WriteLine("***請輸入姓名：");
                            String name = Console.ReadLine();
                            Console.WriteLine("***請輸入成績：");
                            int score = int.Parse(Console.ReadLine());
                            link.add(getStudentNode(id, name, score));
                            break;
                        }
                    //2.學生成績輸出
                    case 2: {
                            link.show();
                            break;
                        }
                    // 3.學生成績查詢
                    case 3:
                        {
                            Console.WriteLine("***請輸入你要查找的id賬號");
                            int index = int.Parse(Console.ReadLine());
                            Student student=link.search(index);
                            Console.WriteLine(student.toString());
                            break;
                        }
                    //4.學生成績修改
                    case 4:
                        {
                            Console.WriteLine("***[注]：只能修改成績！");
                            Console.WriteLine("***請輸入你要修改的id賬號");
                            int index = int.Parse(Console.ReadLine());
                            Console.WriteLine("***請輸入你要修改的id分數");
                            int score = int.Parse(Console.ReadLine());
                            link.upThis(index, score);
                            break;
                        }
                    case 5:
                        {
                            Console.WriteLine("***請輸入你要刪除的id賬號");
                            int index = int.Parse(Console.ReadLine());
                            link.delete(index);
                            break;
                        }
                    default: {
                            break;
                        }
                        
                        
                }
                showChoice();
            }
            Console.ReadKey();
        }


        //獲取節點對象
        public static StudentNode getStudentNode(int id,String name,int score ) {
            return new StudentNode(new Student(id,name,score));
        }

        //啟動界面
        // 1.學生成績輸入 2.學生成績輸出 3.學生成績查詢 4.學生成績修改 0.退出系統
        public static void showView() {
            Console.WriteLine("|----------------------------程序啟動---------------------------|");
            Console.WriteLine("|\t\t\t學生成績管理系統\t\t\t|");
            Console.WriteLine("|---------------------------------------------------------------|");
            Console.WriteLine("|\t\t\t開發人姓名：馬志勇\t\t\t|");
            Console.WriteLine("|\t\t\t開發時間：2020-20-14\t\t\t|");
            Console.WriteLine("|\t\t\t按任意鍵進入系統\t\t\t|");
            Console.WriteLine("|---------------------------------------------------------------|");
        }
        public static void showChoice() {
            Console.WriteLine("|---------------------------------------------------------------|");
            Console.WriteLine("|\t\t\t0.退出系統\t\t\t\t|");
            Console.WriteLine("|\t\t\t1.學生成績輸入\t\t\t\t|");
            Console.WriteLine("|\t\t\t2.學生成績輸出\t\t\t\t|");
            Console.WriteLine("|\t\t\t3.學生成績查詢\t\t\t\t|");
            Console.WriteLine("|\t\t\t4.學生成績修改\t\t\t\t|");
            Console.WriteLine("|\t\t\t5.刪除這個學生\t\t\t\t|");
            Console.WriteLine("|---------------------------------------------------------------|");
        }

    }

    class StudentLinkedList
    {
        //定義一個頭結點啥都不放
        StudentNode head = null;
        public StudentLinkedList() {
            head=new StudentNode(null);
        }
        //添加 按照學號順序順序進行添加
        //如果學號相同則不能添加
        public void add(StudentNode node)
        {
            if (head.next == null)
            {
                head.next = node;
                return;
            }
            //否則定義一個變量臨時變量進行處理；
            StudentNode temp = head;
            int id = node.s.getId();
            bool flag = false;
            while (true)
            {
                if (temp.next == null)
                {
                    flag = false;
                    break;
                }
                if (temp.next.s.getId() > id)
                {
                    flag = false;
                    break;
                }
                else if (temp.next.s.getId() == id)
                {
                    //這個情況是有重復的就不能添加進去
                    flag = true;
                    break;
                }
                temp = temp.next;
            }
            if (flag)
            {
                Console.WriteLine("這個序號已經存在");
            }
            else {
                node.next=temp.next;
                temp.next = node;
            }
        }

        //刪除
        //只能通過id進行刪除
        public bool delete(int id) {
            if (head.next==null) {
                return false;
            }
            StudentNode temp = head;
            while (true) {
                if (temp.next==null) {
                    return false;
                }

                if (temp.next.s.getId()==id) {
                    break;
                }
                temp = temp.next;
            }
            if (temp.next.next != null)
            {
                temp.next = temp.next.next;
            }
            else {
                temp.next = null;
            }

            return true;
        }

        //修改
        //只能修改成績
        public void upThis(int id,int score) {
            if (head.next == null)
            {
                Console.WriteLine("沒有數據，無法修改！");
                return;
            }
            StudentNode temp = head.next;
            while (true) {
                if (temp==null) {
                    Console.WriteLine("沒有這個ID數據!");
                    return;
                }
                if (temp.s.getId()== id) {
                    temp.s.setScore(score);
                    return;
                }
                temp = temp.next;
            }
        }

        //查詢
        public Student search(int id)
        {
            if (head.next == null)
            {
                Console.WriteLine("沒有數據，無法修改！");
                return null;
            }
            StudentNode temp = head.next;
            while (true)
            {
                if (temp == null)
                {
                    Console.WriteLine("沒有這個ID數據!");
                    return null;
                }
                if (temp.s.getId() == id)
                {
                    return new Student(temp.s.getId(), temp.s.getName(), temp.s.getScore());
                }
                temp = temp.next;
            }
        }

        //遍歷
        public void show() {
            Console.WriteLine("ID\t\t姓名\t\t分數");
            StudentNode temp = head.next;
            while (true) {
                if (temp==null) {
                    break;
                }
                Console.WriteLine(temp.s.getId()+"\t\t"+temp.s.getName()+"\t\t"+temp.s.getScore());
                temp = temp.next;
            }
        }
    }


    //創建一個鏈表進行處理這些數據
    class StudentNode
    {
        public Student s;
        public StudentNode next;
        public StudentNode(Student s)
        {
            this.s = s;
        }
    }
    //定義學生類
    class Student
    {
        private int id;
        private String name;
        private int score;
        public Student(int id, String name, int score)
        {
            this.id = id;
            this.name = name;
            this.score = score;
        }

        public void setId(int id)
        {
            this.id = id;
        }
        public int getId()
        {
            return this.id;
        }

        public String getName()
        {
            return this.name;
        }

        public void setName(String name)
        {
            this.name = name;
        }

        public int getScore()
        {
            return this.score;
        }

        public void setScore(int score)
        {
            this.score = score;
        }

        public String toString() {
            return "ID:"+getId() + "\t姓名：" + getName() + "\t成績：" + getScore();
        }
    }

    //這是用戶類
    class User
    {
        private String userName;
        private String userParsword;
        public User(String userName, String userParsword)
        {
            this.userName = userName;
            this.userParsword = userParsword;
        }
        public String getUserName()
        {
            return this.userName;
        }

        public void setName(String userName)
        {
            this.userName = userName;
        }

        public String getUserParsword()
        {
            return this.userParsword;
        }

        public void setUserParsword(String userParsword)
        {
            this.userParsword = userParsword;
        }
    }
}

到此，關于“C#實現學生成績管理系統的代碼如何寫”的學習就結束了，希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學習，快去試試吧！若想繼續學習更多相關知識，請繼續關注億速云網站，小編會繼續努力為大家帶來更多實用的文章！