title: Restart program from a certain line with an if statement?
body: <p>could anyone help me restart my program from line 46 if the user enters 1 (just after the comment where it states that the next code is going to ask the user for 2 inputs) and if the user enters -1 end it. I cannot think how to do it. I'm new to C# any help you could give would be great!</p>
  
  <pre><code>class Program
  {
      static void Main(string[] args)
      {
  
          //Displays data in correct Format
  
          List&lt;float&gt; inputList = new List&lt;float&gt;();
          TextReader tr = new StreamReader("c:/users/tom/documents/visual studio 2010/Projects/DistanceCalculator3/DistanceCalculator3/TextFile1.txt");
          String input = Convert.ToString(tr.ReadToEnd());
          String[] items = input.Split(',');
          Console.WriteLine("Point         Latitude        Longtitude       Elevation");
  
          for (int i = 0; i &lt; items.Length; i++)
          {
              if (i % 3 == 0)
              {
                  Console.Write((i / 3) + "\t\t");
              }
  
              Console.Write(items[i]);
              Console.Write("\t\t");
  
              if (((i - 2) % 3) == 0)
              {
                  Console.WriteLine();
              }
  
          }
  
          Console.WriteLine();
          Console.WriteLine();
  
  
          // Ask for two inputs from the user which is then converted into 6 floats and transfered in class Coordinates    
  
  
          Console.WriteLine("Please enter the two points that you wish to know the distance between:");
          string point = Console.ReadLine();
          string[] pointInput = point.Split(' ');
  
          int pointNumber = Convert.ToInt16(pointInput[0]);
          int pointNumber2 = Convert.ToInt16(pointInput[1]);
  
          Coordinates distance = new Coordinates();
  
          distance.latitude = (Convert.ToDouble(items[pointNumber * 3]));
          distance.longtitude = (Convert.ToDouble(items[(pointNumber * 3) + 1]));
          distance.elevation = (Convert.ToDouble(items[(pointNumber * 3) + 2]));
  
          distance.latitude2 = (Convert.ToDouble(items[pointNumber2 * 3]));
          distance.longtitude2 = (Convert.ToDouble(items[(pointNumber2 * 3) + 1]));
          distance.elevation2 = (Convert.ToDouble(items[(pointNumber2 * 3) + 2]));
  
  
          //Calculate the distance between two points
  
          const double PIx = 3.141592653589793;
          const double RADIO = 6371;
  
          double dlat = ((distance.latitude2) * (PIx / 180)) - ((distance.latitude) * (PIx / 180));
          double dlon = ((distance.longtitude2) * (PIx / 180)) - ((distance.longtitude) * (PIx / 180));
  
          double a = (Math.Sin(dlat / 2) * Math.Sin(dlat / 2)) + Math.Cos((distance.latitude) * (PIx / 180)) * Math.Cos((distance.latitude2) * (PIx / 180)) * (Math.Sin(dlon / 2) * Math.Sin(dlon / 2));
          double angle = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
          double ultimateDistance = (angle * RADIO);
  
          Console.WriteLine("The distance between your two points is...");
          Console.WriteLine(ultimateDistance);
  
          //Repeat the program if the user enters 1, end the program if the user enters -1
  
          Console.WriteLine("If you wish to calculate another distance type 1 and return, if you wish to end the program, type -1.");
          Console.ReadLine();
  
          if (Convert.ToInt16(Console.ReadLine()) == 1);
  
          {
             //here is where I need it to repeat
          }
  </code></pre>