Console-算法[foreach,if]-一输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数

using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            char[] cArray=null;
            int letters = 0; //字符数
            int space = 0;  //空格数
            int digit = 0;  //数字数
            int others = 0; //其它字符
            Console.WriteLine("Please input some characters");
            string str=Console.ReadLine();
            cArray = str.ToCharArray();

            foreach (Char c in cArray)
            {
                if (Char.IsLetter(c))
                {
                    letters++;
                }
                else if (Char.IsWhiteSpace(c))
                {
                    space++;
                }
                else if (Char.IsDigit(c))
                {
                    digit++;
                }
                else
                {
                    others++;
                }
            }

            Console.WriteLine("all in all:leters={0},space={1},digit={2},others={3}",letters,space,digit,others);
        }
    }
}

Please input some characters
123abc @
all in all:leters=3,space=1,digit=3,others=1
请按任意键继续. . .

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