基於輸入的C＃重復或關閉程序-溫度轉換

Question

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

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
           Console.WriteLine("What is the Temperature in Fahrenheit?")
           string input = Console.ReadLine ();
            double tt = double.Parse (input);
            double cc = (tt-32)*5/9;
            Console.WriteLine(cc + " is the temperature in Celsius");

        }
    }
}

我的問題是，我需要接收輸入，否則請關閉。 如果他們的輸入是（“”），則程序需要關閉，但是如果他們輸入了數字-例如13，則需要使程序循環回到開頭，直到得到（“”）的輸入為止。程序關閉。 我對編程還很陌生，但是我已經嘗試了所有可以想到的嘗試/嘗試，因此，您可以提供的任何幫助將不勝感激。

Answer 1

嘗試：

Console.WriteLine("What is the Temperature in Fahrenheit?")
string input = Console.ReadLine ();

while (input != "")
{
    double tt = double.Parse (input);
    double cc = (tt-32)*5/9;
    Console.WriteLine(cc + " is the temperature in Celsius");
    Console.WriteLine("What is the Temperature in Fahrenheit?")
    input = Console.ReadLine ();
}

Answer 2

相反，如果您使用特定字符指定結束程序而不是空行，則相對容易：

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

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            string exit = "";
            while(exit.ToLower != "no") 
            {
                Console.WriteLine("What is the Temperature in Fahrenheit?");
                string input = Console.ReadLine();
                double tt = double.Parse (input);
                double cc = (tt-32)*5/9;
                Console.WriteLine(cc + " is the temperature in Celsius");
                Console.WriteLine("if you want to do another conversion, enter \"yes\" otherwise, enter \"no\"");
                exit = Console.ReadLine();
            }
        }
    }
}