C#实现简单学生成绩管理系统
using System;
using System.Net.Http.Headers;
namespace Dome13
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("********欢迎进入启动界面*********");
Console.WriteLine("******系统名称:晓氏工作室*******");
Console.WriteLine("******开发人姓名:师晓峰*********");
Console.WriteLine("******开发时间:2020-10-17*******");
if (true)
{
Console.WriteLine("********欢迎进入用户登录页面*********");
Console.WriteLine("请输入用户名:");
string userName = Console.ReadLine();
Console.WriteLine("请输入密码:");
string passWord = Console.ReadLine();
string uN = "师晓峰";
string pW = "88481234";
int count = 2;
while (true)
{
if (userName == uN && passWord == pW)
{
Console.WriteLine("********恭喜您登录成功*********");
Console.WriteLine("******欢迎进入功能菜单栏*******");
// 1.学生成绩输入 2.学生成绩输出 3.学生成绩查询 4.学生成绩修改 0.退出系统
Console.WriteLine("******1.学生成绩输入*******");
Console.WriteLine("******2.学生成绩输出*******");
Console.WriteLine("******3.学生成绩查询*******");
Console.WriteLine("******4.学生成绩修改*******");
Console.WriteLine("******0.退出系统***********");
break;
}
else
{
if (count > 0)
{
Console.WriteLine("您输入的用户名或密码错误,请重新输入");
Console.WriteLine("您还有{0}次机会哦!!!", count--);
Console.WriteLine("请输入用户名:");
userName = Console.ReadLine();
Console.WriteLine("请输入密码:");
passWord = Console.ReadLine();
}
}
}
const int N_S = 3;
string[,] student = new string[N_S ,7];
int n = int.Parse(Console.ReadLine());
while (true)
{
switch (n)
{
case 1:
Console.WriteLine(" 1.学生成绩输入");
InputStudent(student, N_S);
break;
case 2:
Console.WriteLine(" 2.学生成绩输出");
OutStudent(student, N_S);
break;
case 3:
Console.WriteLine(" 3.学生成绩查询");
Console.WriteLine("请输入学号:");
string id = Console.ReadLine();
InquierStudent(student ,id);
break;
case 4:
Console.WriteLine(" 4.学生成绩修改");
Console.WriteLine("学号固定不变,按照学号查找");
Console.WriteLine("请输入学号:");
string id1 = Console.ReadLine();
AmendStudent(student,id1);
break;
case 0:
Console.WriteLine(" 0.退出系统");
break;
default:
Console.WriteLine("您输入的数字有误,请重新输入(0~4)");
break;
}
Console.WriteLine();
Console.WriteLine("******欢迎进入功能菜单栏*******");
Console.WriteLine("******1.学生成绩输入*******");
Console.WriteLine("******2.学生成绩输出*******");
Console.WriteLine("******3.学生成绩查询*******");
Console.WriteLine("******4.学生成绩修改*******");
Console.WriteLine("******0.退出系统***********");
Console.WriteLine("请选择功能:");
n =int.Parse ( Console.ReadLine());
}
}
static void InputStudent(String[,]student ,int num)
{
int temp;
string strStudent;
string[] strInof;
Console.WriteLine("请输入学生信息(以·分隔开):学号·姓名·语文·数学·英语");
for (int i=0;i { Console.WriteLine("请输入第{0}个学生的信息。",i+1); strStudent = Console.ReadLine(); strInof = strStudent.Split('·'); for (int j=0;j { student[i,j] = strInof[j]; } Console.WriteLine(); //计算总分 temp = Convert.ToInt32(student[i,2]) + Convert.ToInt32(student[i,3]) + Convert.ToInt32(student[i,4]); student[i,5] = Convert.ToString(temp); //计算平均分 student[i,6] = string .Format ("{0:F2}",temp /3.0); } } static void OutStudent(string[,] student ,int num) { Console.WriteLine(); Console.WriteLine("**********************该学生的信息***************************"); Console.WriteLine("|------------------------------------------------------------|"); Console.WriteLine("| 学号 | 姓名 | 语文 | 数学 | 英语 | 总分 | 平均分 |"); Console.WriteLine("|------------------------------------------------------------|"); for (int i=0;i { Console.WriteLine("| {0,10} | {1,3} | {2,4} | {3,4} | {4,4} | {5,5}| {6,6:F2} |",student[i,0],student [i,1],student [i,2],student [i,3],student [i,4],student [i,5],student [i,6]); Console.WriteLine("|------------------------------------------------------------|"); } } static void InquierStudent(String[,]student,string id){ int i = 0; for (;i { if (student[i,0]==id) { Console.WriteLine("**********************该学生的信息***********************"); Console.WriteLine("|--------------------------------------------------------|"); Console.WriteLine("| 学号 | 姓名 | 语文 | 数学 | 英语 | 总分 | 平均分 |"); Console.WriteLine("|--------------------------------------------------------|"); Console.WriteLine("| {0,10} | {1,3} |{2,4}| {3,4} | {4,4} | {5,5}| {6,6:F2} |", student[i,0], student[i,1], student[i,2], student[i, 3], student[i,4], student[i, 5], student[i,6]); Console.WriteLine("|--------------------------------------------------------|"); break; } } if(i>=student.Length) { Console.WriteLine("查询失败,您输入的学号有误!!!!"); } } static void AmendStudent(String[,] student, string id1) { int i = 0; for (; i < student.Length; i++) { if (student[i, 0] == id1) { Console.WriteLine("**************************该学生的信息**********************"); Console.WriteLine("|----------------------------------------------------------|"); Console.WriteLine("| 学号 | 姓名 | 语文 | 数学 | 英语 | 总分 | 平均分 |"); Console.WriteLine("|----------------------------------------------------------|"); Console.WriteLine("|{0,10} | {1,3} | {2,4} | {3,4} | {4,4} | {5,5} | {6,6:F2}|", student[i,0], student[i,1], student[i,2], student[i,3], student[i,4], student[i,5], student[i,6]); Console.WriteLine("|----------------------------------------------------------|"); Console.WriteLine(); int temp = 0; Console.WriteLine("-------------------------"); Console.WriteLine("******1.修改姓名*********"); Console.WriteLine("******2.修改语文成绩*****"); Console.WriteLine("******3.修改数学成绩*****"); Console.WriteLine("******4.修改英语成绩*****"); Console.WriteLine("******0.退出修改*********"); Console.WriteLine("-------------------------"); Console.WriteLine("请输入要修改的选项(对应的序号)"); int j = int.Parse(Console.ReadLine()); while (j != 0) { switch (j) { case 1: Console.WriteLine("请输入修改后的姓名:"); student[i, 1] = Console.ReadLine(); break; case 2: Console.WriteLine("请输入修改后的语文:"); student[i, 2] = Console.ReadLine(); break; case 3: Console.WriteLine("请输入修改后的数学:"); student[i, 3] = Console.ReadLine(); break; case 4: Console.WriteLine("请输入修改后的英语:"); student[i, 4] = Console.ReadLine(); break; case 0: Console.WriteLine("******0.退出修改*********"); break; default: Console.WriteLine("您输入的序号错误,请重新输入"); break; } Console.WriteLine("请输入要修改的选项(对应的序号1`4)"); j = int.Parse(Console.ReadLine()); } temp = Convert.ToInt32(student [i,2]) + Convert.ToInt32(student[i,3]) + Convert.ToInt32(student[i,4]); student[i, 5] = Convert.ToString(temp); //计算平均分 student[i, 6] = string.Format("{0:F2}", temp / 3.0); Console.WriteLine("**********************修改侯该学生的信息***********************"); Console.WriteLine("|-------------------------------------------------------------|"); Console.WriteLine("| 学号 | 姓名 | 语文 | 数学 | 英语 | 总分 | 平均分 |"); Console.WriteLine("|-------------------------------------------------------------|"); Console.WriteLine("|{0,10} | {1,3} | {2,4} | {3,4} | {4,4} | {5,5} | {6,6:F2} |", student[i,0], student[i,1], student[i,2], student[i,3], student[i,4], student[i,5], student[i,6]); Console.WriteLine("|-------------------------------------------------------------|"); Console.WriteLine(); break; } if (i>=student .Length ) { Console.WriteLine("查找失败,您输入的学号有误!!!"); } Console.ReadKey(); } } } } }