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最好的超声波清洗机是哪款牌子?高颜值的超声波清洗机

我是芄兰 09-06 13:00 阅读 6

以下代码将判断键盘输入字符是数字 还是字母:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp4
{
    using System;
    using System.Threading;

    public class BoolKeyTest
    {
        static void Main()
        {
        repeat:
            Console.Write("Enter a character: ");
            char c = (char)Console.Read();
            if (Char.IsLetter(c))
            {
                if (Char.IsLower(c))
                {
                    Console.WriteLine($"这时一个小写字母{c}.");
                }
                else
                {
                    Console.WriteLine($"这时一个小写字母{c}.");
                }
            }
            else if(Char.IsDigit (c))
            {
                Console.WriteLine($"这是一个数字{c}.");
            }
            else
            {  int s = Convert.ToInt32(c);
                Console.WriteLine($"{s} IS Not an alphabetic character.");
            }
            goto repeat;
            //ascii码10是换行,13是回车,所以每次输入字符,按回车键都会识别这两个
            Console.ReadLine();
            Console.ReadLine();
        }
    }
    /* Sample Output:
    汉字提示是字母
        Enter a character: X
        The character is uppercase.

        Enter a character: x
        The character is lowercase.

        Enter a character: 2
        The character is not an alphabetic character.
     */


}

 

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