题解 | #字符串最后一个单词的长度#

using System;

namespace length
{
    class program
    {
        public static void Main(string[] args)
        {
            string input;
            int l;
            input = Console.ReadLine();
            char[] inputchar ;
            inputchar = input.ToCharArray();
            int i;
            for (i = input.Length-1; i >= -1; i--)
            {
                if (i==-1||inputchar[i] == ' ')
                {
                    l = input.Length-1 - i;
                    Console.WriteLine(l);
                    break;
                };

            }
        }
    }
}