如何使用&&在“做”中和“同时”表情？ [英] How to use && in "do" and "while" expressions?

问题描述

我的代码应该模仿帐户创建者，并在给出不正确的密码时给用户错误（我最终会达到用户名要求）。如果用户输入了一个不正确的密码，我想循环一些代码，但我似乎无法解决它。任何建议将不胜感激。



我的尝试：

My code is supposed to mimic an account creator and give the user errors when given an improper password (I'll eventually get to Username requirements). I want to loop some code if the user input an improper password but I can't seem to get it down. Any suggestion would be appreciated.

What I have tried:

using System;

namespace ConsoleApp4
{
    class Program
    {
        static void Main(string[] args)
        {
            string Username;
            string Password;
            int Zero;
            int CapCharacters;
            int LowCharacters;
            int Digits;
            int Symbols;
            int PassLength;

            Console.WriteLine("Hello user, please follow these instructions to create your new account.\n");
            Console.Write($"Please enter a username to go by: ");
            Username = Console.ReadLine();

            do
            {
                Zero = 0;
                CapCharacters = 0;
                LowCharacters = 0;
                Digits = 0;
                Symbols = 0;

                Console.Write($"\nAlright {Username}, now please enter a password: ");
                Password = Console.ReadLine(); // Password rules: 6-12 chara, 1 cap, 1 low, 1 num, 1 sym.
                PassLength = Password.Length;
                Console.WriteLine("");

                while (Zero < PassLength)
                {
                    if (Password[Zero] >= 'a' && Password[Zero] <= 'z')
                    {
                        LowCharacters++;
                    }

                    else if (Password[Zero] >= 'A' && Password[Zero] <= 'Z')
                    {
                        CapCharacters++;
                    }

                    else if (Password[Zero] >= '0' && Password[Zero] <= '9')
                    {
                        Digits++;
                    }
                    else
                    {
                        Symbols++;
                    }

                    Zero++;
                }


                if (Password.Length < 6)
                {
                    Console.WriteLine("Error: Your Password is too short.");
                }

                if (Password.Length > 12)
                {
                    Console.WriteLine("Error: Your Password is too long.");
                }

                if (CapCharacters < 1)
                {
                    Console.WriteLine("Error: Your Password needs to contain a capital letter.");
                }

                if (LowCharacters < 1)
                {
                    Console.WriteLine("Error: Your Password needs to contain a lowercase letter.");
                }

                if (Digits < 1)
                {
                    Console.WriteLine("Error: Your Password needs to contain a digit.");
                }

                if (Symbols < 1)
                {
                    Console.WriteLine("Error: Your Password needs to contain a symbol.");
                }
            }

            while (Password.Length < 6 && Password.Length > 12 &&
                   CapCharacters < 1 && LowCharacters < 1 &&
                   Digits < 1 && Symbols < 1);

            Console.WriteLine("");
            Console.WriteLine("Congradulations, your account is now set up!");
            Console.WriteLine("");
        }
    }
}

推荐答案

请输入用户名：）;
Username = Console.ReadLine（）;

do
{
Zero = 0 ;
CapCharacters = 0 ;
LowCharacters = 0 ;
Digits = 0 ;
符号= 0 ;

Console.Write（

"Please enter a username to go by: "); Username = Console.ReadLine(); do { Zero = 0; CapCharacters = 0; LowCharacters = 0; Digits = 0; Symbols = 0; Console.Write(

\ nAlright {用户名}，现在请输入密码：）;
Password = Console.ReadLine（）; // 密码规则：6-12 chara，1 cap，1 low，1 num，1 sym。
PassLength = Password.Length;
Console.WriteLine（ ）;

while （零< PassLength）
{
if （密码[零] > = ' a'&& Password [Zero] < = ' z'）
{
LowCharacters ++;
}

else if （密码[零] > = ' A'&&密码[零] < = ' Z'）
{
CapCharacters ++;
}

else if （密码[零] > = ' 0'&&密码[零] < = ' 9'）
{
Digits ++;
}
else
{
符号++;
}

零点++;
}


if （Password.Length < 6 ）
{
Console.WriteLine（ 错误：您的密码太短。）;
}

if （Password.Length > 12 ）
{
Console.WriteLine（ 错误：您的密码太长了。）;
}

if （CapCharacters < 1 ）
{
Console.WriteLine（ 错误：您的密码需要包含大写字母。）;
}

if （LowCharacters < 1 ）
{
Console.WriteLine（ 错误：您的密码需要包含小写字母。）;
}

如果（数字< 1 ）
{
Console.WriteLine（ 错误：您的密码需要包含一个数字。）;
}

if （符号< 1 ）
{
Console.WriteLine（ 错误：您的密码需要包含符号。）;
}
}

while （Password.Length < 6 &&& Password.Length > 12 &&
CapCharacters < 1 && LowCharacters < 1 &&
数字< 1 && Symbols < 1 ）;

Console.WriteLine（ ）;
Console.WriteLine（ Congradulations，您的帐户现已设置！）;
Console.WriteLine（ ）;
}
}
}

"\nAlright {Username}, now please enter a password: "); Password = Console.ReadLine(); // Password rules: 6-12 chara, 1 cap, 1 low, 1 num, 1 sym. PassLength = Password.Length; Console.WriteLine(""); while (Zero < PassLength) { if (Password[Zero] >= 'a' && Password[Zero] <= 'z') { LowCharacters++; } else if (Password[Zero] >= 'A' && Password[Zero] <= 'Z') { CapCharacters++; } else if (Password[Zero] >= '0' && Password[Zero] <= '9') { Digits++; } else { Symbols++; } Zero++; } if (Password.Length < 6) { Console.WriteLine("Error: Your Password is too short."); } if (Password.Length > 12) { Console.WriteLine("Error: Your Password is too long."); } if (CapCharacters < 1) { Console.WriteLine("Error: Your Password needs to contain a capital letter."); } if (LowCharacters < 1) { Console.WriteLine("Error: Your Password needs to contain a lowercase letter."); } if (Digits < 1) { Console.WriteLine("Error: Your Password needs to contain a digit."); } if (Symbols < 1) { Console.WriteLine("Error: Your Password needs to contain a symbol."); } } while (Password.Length < 6 && Password.Length > 12 && CapCharacters < 1 && LowCharacters < 1 && Digits < 1 && Symbols < 1); Console.WriteLine(""); Console.WriteLine("Congradulations, your account is now set up!"); Console.WriteLine(""); } } }

在while条件中需要一个OR运算符，而不是AND：

You need an OR operator in the while condition, not an AND:

while (Password.Length < 6 || Password.Length > 12 ||
       CapCharacters < 1 || LowCharacters < 1 ||
       Digits < 1 || Symbols < 1);

希望这会有所帮助。

Hope this helps.

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