C#输入IP地址并检查格式再进行分截取

快来打我* 2022-12-05 12:17 124阅读 0赞

using System;
    
    namespace CSharp
    {
        class Program
        {
            static void Main(string[] args)
            {
                bool shutdown = true;
                while (shutdown)
                {
                    Console.Write("\n请输入一个IP地址：");
                    string ipAddr = Console.ReadLine();
                    if (ipAddr.Length >= 7 && ipAddr.Length <= 15)
                    {
                        string[] splitIP = new string[4];
                        for (int i = 0; i < 3; i++)
                        {
                            splitIP = ipAddr.Split('.');
                        }
    
                        bool flag = true;
                        for (int i = 0; i < splitIP.Length; i++)
                        {
                            if (int.Parse(splitIP[i]) < 0 || int.Parse(splitIP[i]) > 255)
                            {
                                Console.WriteLine("提示：IP格式有误！");
                                flag = false;
                                continue;
                            }
                            if (flag)
                            {
                                Console.Write(splitIP[i] + "\t");
                                shutdown = false;
                            }
                        }
                        Console.WriteLine();
                        break;
                    }
                    else
                    {
                        Console.WriteLine("提示：IP格式有误！");
                        continue;
                    }
                }
                
                Console.ReadLine();
            }
        }
    }

运行示例：  
![在这里插入图片描述][20200911072246636.png_pic_center]

[20200911072246636.png_pic_center]: /images/20221123/f65df358bcc34d708080f06a57201284.png