program.cs

学生成绩管理系统（包含实验报告） C#实现 本系统设计有如下功能模块： &#61550 输入学生信息 &#61550 显示学生信息 &#61550 按学号排序 &#61550 按成绩升

using System;
using System.Collections.Generic;
using System.Text;

namespace mwb
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("--------------------------------------\n");
            Console.WriteLine("欢迎来到学生成绩管理系统！\n");
            Console.WriteLine("作者：计058班 马文斌 20053106\n");
            Console.WriteLine("--------------------------------------\n");
            Console.WriteLine("请选择所需的操作:\n1.输入学生信息\n2.显示学生的信息\n3.按学号排序\n4.按成绩升序排序\n5.按成绩降序排序\n6.成绩分段\n7.退出");
            char oper;
            oper = (char)Console.Read();
            while (oper != '7')
            {
                switch (oper)
                {
                    case '1': input(); break;
                    case '2': display(); Console.ReadLine(); break;
                    case '3': numsort(); display(); Console.ReadLine(); break;
                    case '4': ascendsort(); display(); Console.ReadLine(); break;
                    case '5': decendsort(); display(); Console.ReadLine(); break;
                    case '6': grading(); display(); Console.ReadLine(); break;
                    default: error(); break;
                }
                Console.WriteLine("请选择所需的操作:\n1.输入学生信息\n2.显示学生的信息\n3.按学号排序\n4.按成绩升序排序\n5.按成绩降序排序\n6.成绩分段\n7.退出");
                oper = (char)Console.Read();
            }
            Console.WriteLine("Thank you!\n");
            Console.ReadLine();
            Console.ReadLine();

        }
        struct Record
        {
            public string Name;
            public string Num;
            public string Class;
            public int Result;
            public char grade;
        }

        static Record[] Records = new Record[100];

        static int length = 0;

        static public void input()
        {
            if (length > 10)
                Console.WriteLine("超过数量限制！");
            else
            {
                Console.ReadLine();
                int n;
                Console.WriteLine("请输入学生数量:");
                n = Int32.Parse(Console.ReadLine());
                while (n != 0)
                {
                    Console.WriteLine("请输入学生信息:\n");
                    Console.Write("姓名:");
                    Records[length].Name = Console.ReadLine();
                    Console.Write("学号:");
                    Records[length].Num = Console.ReadLine();
                    Console.Write("班级:");
                    Records[length].Class = Console.ReadLine();
                    Console.Write("成绩:");
                    Records[length].Result = Int32.Parse(Console.ReadLine());
                    Records[length].grade = '?';
                    n--;
                    length++;
                }
            }
        }

        static public void display()
        {
            int i;
            Console.WriteLine("{0}\t{1}\t\t{2}\t{3}\t{4}\n", "姓名", "学号", "班级", "成绩", "等级");
            for (i = 0; i < length; i++)
            {
                Console.WriteLine("{0}\t{1}\t{2}\t{3}\t{4}\n", Records[i].Name, Records[i].Num, Records[i].Class, Records[i].Result, Records[i].grade);
            }
        }

        static public void numsort()
        {
            int i, s;
            Record holder;
            for (i = 0; i < length; i++)
                for (s = 0; s < length - i - 1; s++)
                    if (Int32.Parse(Records[s].Num) > Int32.Parse(Records[s + 1].Num))
                    { holder = Records[s]; Records[s] = Records[s + 1]; Records[s + 1] = holder; }
        }


        static public void ascendsort()
        {
            int i, s;
            Record holder;
            for (i = 0; i < length; i++)
                for (s = 0; s < length - i - 1; s++)
                    if (Records[s].Result > Records[s + 1].Result)
                    { holder = Records[s]; Records[s] = Records[s + 1]; Records[s + 1] = holder; }
        }

        static public void decendsort()
        {
            int i, s;
            Record holder;
            for (i = 0; i < length; i++)
                for (s = 0; s < length - i - 1; s++)
                    if (Records[s].Result < Records[s + 1].Result)
                    { holder = Records[s]; Records[s] = Records[s + 1]; Records[s + 1] = holder; }
        }

        static public void grading()
        {
            Console.WriteLine("<60:E\t60--70:D\t70--80:C\t80--90:B\t90--100:A\n");
            for (int i = 0; i < length; i++)
            {
                if (Records[i].Result >= 60 && Records[i].Result < 70) Records[i].grade = 'D';
                else if (Records[i].Result >= 70 && Records[i].Result < 80) Records[i].grade = 'C';
                else if (Records[i].Result >= 80 && Records[i].Result < 90) Records[i].grade = 'B';
                else if (Records[i].Result >= 90 && Records[i].Result <= 100) Records[i].grade = 'A';
                else Records[i].grade = 'E';
            }

        }

        static public void error()
        {
            Console.WriteLine("无此功能.请重新选择:\n");
        }
    }
}