题解 | #牛牛的空格分隔#

包含了对异常产生的检测和原因说明

using System;
public class Program {
    public static void Main() {
        String[] s = new String[3];
        int i = 0;

        // 读取三个字符串
        while (i < 3)
        {
            s[i] = Console.ReadLine();
            i++;
        }

        // 检查第三个字符串是否为 null
        if (s[2] == null)
        {
            Console.WriteLine("Third string is null.");
        }
        else
        {
            try
            {
                double number = double.Parse(s[2]);
                Console.WriteLine("{0} {1} {2:0.000000}", s[0], s[1], number);
            }
            catch (FormatException ex)
            {
                Console.WriteLine("Format exception: " + ex.Message);
            }
            catch (OverflowException ex)
            {
                Console.WriteLine("Overflow exception: " + ex.Message);
            }
        }
    }
}