2018-12-19

Console.WriteLine("请输入用户名");

 string username = Console.ReadLine();

Console.WriteLine("请输入密码");

 string password = Console.ReadLine();

 if (username == "admin" && password == "88888")

 {

 Console.WriteLine("用户名和密码输入正确");

 }

else if (username != "admin" && password == "88888")

 {

 Console.WriteLine("你输入的用户名不存在");

 }

 else if(username=="admin"&&password!="88888")

{

Console.WriteLine("你输入的密码错误");

 }

 Console.ReadKey();