Question

我目前正在做一个树屋培训课程，您可以在其中创建一个健身控制台应用程序，记录您的输入锻炼时间，记录它并根据您的需求提供反馈，并且在树屋社区中没有得到任何帮助，所以如果有人能够帮助我找到以下解决方案，这将是很大的帮助，我不确定它是否与放置变量的位置有关，如果它位于调用in的大括号之间。我不太确定我真的很新

using System;
namespace Treehouse.fitnessFrog
{
class Program
{
  static void Main()
  {
      int runningTotal = 0;
      bool keepGoing = true;

        while(keepGoing) {
           // Prompt user for minutes exercised 
            Console.Write("Enter how many minutes you exercised or type quit to exit ");
            string entry = Console.ReadLine();

            if(entry == "quit")
            {
              keepGoing = false;

            }else{

              try
              { 
                int minutes = int.Parse(entry);
                if(minutes <= 0)
              {
                Console.WriteLine("Not Acceptable");
                continue;
              }
              else if(minutes <= 10)// Number 1 
              {
                Console.WriteLine("Better than nothing, am I right ?");
              }
              else if(minutes <= 30) // Number 2
              {
                Console.WriteLine("You are still quite lazy");
              }
              else if(minutes <= 60) // Number 3 
              {
                Console.WriteLine("Your doing all right i guess. But work on you're spelling!");
              }
              else 
              {
                Console.WriteLine("Cool story bro");
              }
              }
              catch(FormatException)
              {
                  Console.WriteLine("That is not valid");
                  continue;
              }                   
            // Add minutes exercised to total 
            runningTotal = runningTotal + minutes;

            // Display total minutes exercised to the screen 
            Console.WriteLine("You've entered "+ runningTotal + " minutes");

            // Repeat until user quits  
        }


      }
        Console.WriteLine("Goodbye mate"); 
  }
 }
}

Answer 1

您应该在minutes块之外声明变量try：

int minutes = 0; // create variable here
try
{ 
    minutes = int.Parse(entry); // here only use this variable
    if(minutes <= 0)
    {
        // your code
    }
    //else if statements
    ...
}

如何解决错误CS0103：当前上下文中不存在名称'minutes'

1 个答案: