Error cs1001 unexpected symbol expecting identifier

I’m new to programming and am taking a C# class. I am getting compiler error CS1001 when I try to write this program.

I read the Compiler Error description (link below), but I’m really not getting it. What am I doing wrong?

http://msdn.microsoft.com/en-us/library/b839hwk4.aspx

Here is my source code:

using System;
public class InputMethodDemoTwo
{
   public static void Main()
   {
      int first, second;
      InputMethod(out first, out second); 
      Console.WriteLine("After InputMethod first is {0}", first);
      Console.WriteLine("and second is {0}", second);
   }
   public static void InputMethod(out first, out second) 
   // The error is citing the line above this note.
   {
      one = DataEntry("first"); 
      two = DataEntry("second");
   }
      public static void DataEntry(out int one, out int two)
      {
         string s1, s2;
         Console.Write("Enter first integer ");
         s1 = Console.ReadLine();
         Console.Write("Enter second integer ");
         s2 = Console.ReadLine();
         one = Convert.ToInt32(s1);
         two = Convert.ToInt32(s2);
      }
}

According to the instructions, I’m supposed to have a method b (InputData) which pulls statements from method c (DataEntry)… Here are the instructions:

The InputMethod()in the InputMethodDemo program in Figure 6-24 contains repetitive
code that prompts the user and retrieves integer values. Rewrite the program so the
InputMethod()calls another method to do the work. The rewritten InputMethod()
will need to contain only two statements:

one = DataEntry(«first»);

two = DataEntry(«second»);

Save the new program as InputMethodDemo2.cs.»

The InputMethodDemo they are referring to is the same program, except that it calls only one method (the InputMethod) instead of two.

The text I referred to above is «Microsoft® Visual C#® 2008, An Introduction to Object-Oriented Programming, 3e, Joyce Farrell»

Any advice/ help would be greatly appreciated.

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Table of contents
• Error CS1001 (Identifier expected)
• Compiler Error CS1001
• What does “Unexpected symbol: ‘end-of-file’ “ mean?

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Error CS1001 (Identifier expected)

using System;
public class InputMethodDemoTwo
{
   public static void Main()
   {
      int first, second;
      InputMethod(out first, out second); 
      Console.WriteLine("After InputMethod first is {0}", first);
      Console.WriteLine("and second is {0}", second);
   }
   public static void InputMethod(out first, out second) 
   // The error is citing the line above this note.
   {
      one = DataEntry("first"); 
      two = DataEntry("second");
   }
      public static void DataEntry(out int one, out int two)
      {
         string s1, s2;
         Console.Write("Enter first integer ");
         s1 = Console.ReadLine();
         Console.Write("Enter second integer ");
         s2 = Console.ReadLine();
         one = Convert.ToInt32(s1);
         two = Convert.ToInt32(s2);
      }
}

using System;

public class InputMethodDemoTwo
{
    public static void Main()
    {

        int first, second;

        InputMethod(out first, out second);
        Console.WriteLine("After InputMethod first is {0}", first);
        Console.WriteLine("and second is {0}", second);
        Console.ReadLine();
    }

    public static void InputMethod(out int first, out int second)
    //Data type was missing here
    {
        first = DataEntry("first");
        second = DataEntry("second");
    }

    public static int DataEntry(string method)
    //Parameter to DataEntry should be string
    {
        int result = 0;
        if (method.Equals("first"))
        {
            Console.Write("Enter first integer ");
            Int32.TryParse(Console.ReadLine(), out result);

        }
        else if (method.Equals("second"))
        {
            Console.Write("Enter second integer ");
            Int32.TryParse(Console.ReadLine(), out result);
        }
        return result;
    }
}

public static void InputMethod(out first, out second)
{
  one = DataEntry("first");     
  two = DataEntry("second");
}

public static void InputMethod(out DataEntry first, out DataEntry second)
{
  first = DataEntry("first"); 
  second = DataEntry("second");
}

Compiler Error CS1001

public class //CS1001
{
    public int Num { get; set; }
    void MethodA() {}
}

public class Program
{
    enum Colors
    {
        'a', 'b' // CS1001, 'a' is not a valid int identifier
        // The following line shows examples of valid identifiers:
        // Blue, Red, Orange
    };

    public static void Main()
    {
    }
}

interface IMyTest
{
    void TestFunc1(int, int);  // CS1001
    // Use the following line instead:
    // void TestFunc1(int a, int b);
}

class CMyTest : IMyTest
{
    void IMyTest.TestFunc1(int a, int b)
    {
    }
}

What does “Unexpected symbol: ‘end-of-file’ “ mean?

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {            
            input = Console.ReadLine();
            try
            {
                int input = int.Parse(output);

                if (input == "quit")
                {
                string output = "Goodbye.";
                continue;
                }
                else
                {
                string output = "You entered " + input + ".";
                }
            }

            catch(FormatException)
            {


    }
}

using System;
using System.Diagnostics;

namespace Next

{

    class MainClass

    {

        public static void Main(string[] args) // this is a method called "Main". It is called when the program starts.

        {
            Random numberGenerator = new Random();
            int num01 = numberGenerator.Next(1, 21);
            int num02 = numberGenerator.Next(1, 21);
            int num001 = 1;
            int num002 = 2;
            int num003 = 3;
            int num004 = 4;
            int num005 = 5;

            Console.WriteLine("                                                  Welcome to XMATH!");
            Console.WriteLine("------------------------------------------------------------------------------------------------------------------------");
            Console.WriteLine("                                                  Difficulty Selection n1 n2 n3 n4 n5 n6 n7 n8 n9");
            Console.WriteLine("To START the first level press 1 nTo ENTER a code press 2nTo EXIT the game press 3 nTo see the RANKLIST press 4 nTo see the CREDITS press 5");
            Console.WriteLine();
            Console.WriteLine("------------------------------------------------------------------------------------------------------------------------");


            int answer01 = Convert.ToInt32(Console.ReadLine());
            if (num001 == answer01)
            {
                Console.WriteLine();
                Console.WriteLine("------------------------------------------------------------------------------------------------------------------------");
                Console.WriteLine();
                Console.Write("What is " + num01 + " plus " + num02 + "?: ");
                int answer = Convert.ToInt32(Console.ReadLine());
                if (answer == num01 + num02)
                {

                    Console.WriteLine("Well done! Your answer is correct.");

                }
                else
                {

                    Console.WriteLine("Are you even trying?");

                }
            }


            int answer02 = Convert.ToInt32(Console.ReadLine());
            else if (num002 == answer02)
            {
                Console.WriteLine("------------------------------------------------------------------------------------------------------------------------");
                Console.WriteLine("                                                  Still in progress. n                                                  Please wait for updates");
                Console.WriteLine("------------------------------------------------------------------------------------------------------------------------");
            }
            Console.ReadKey();
            Console.WriteLine();
        }

    }

}

if (){

}
// you cannot put code here.
else if ()
{

}

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