need help in sqareApp program ?

// objective create a program in c# console APP make the program calculate the sum, difference, product, and finally average it .

my problem is for some reason im keep getting error in visual studio 2010 while making this program

may be some one can help me out?

here are my code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace SquaredResult
{
    class Program
    {
        static void Main(string[] args)
        {
            string inputValue;
            int value, //result, square, average, sum, difference, product, addition, intOne, intTwo;
            //DisplayInstruction;
            //SquaredInputValue;
            intOne = GetInt();
            intTwo = GetInt();
            //square = SquaredInputValue;
            sum = ForSum(intOne, intTwo);
            difference = ForDifference(intOne, intTwo);
            product = ForProduct(intOne, intTwo);
            average = ForAverage(intOne, intTwo);
            SquaredInputValue(intOne, intTwo);
            DisplayResult();
        }
        public static int ForSum(int One, int Two)
        {
            return (One + Two);
        }
        public static int ForDifference(int One, int Two)
        {
            return (One - Two);
        }
        public static int ForProduct(int One, int Two)
        {
            return (One * Two);
        }
        public static int ForAverage(int One, int Two)
        {
            return ((One + Two) / 2);
        }
        public static int GetInt()
        {
            string inputValue;
            int value;
            Console.Write("Enter interger : ");
            inputValue = Console.ReadLine();
            value = int.Parse(inputValue);
            return value;
        }
        public static void SquaredInputValue(int One, int Two)
        {
            string inputValue;
            double value;
            double result;
            inputValue = Console.ReadLine();
            value = int.Parse(inputValue);
            inputValue = Console.ReadLine();
            result = Math.Pow(value, 2);
        }
        public static void DisplayInstruction(int One, int Two)
        {
            string inputValue;
            int value;
            Console.Write("Enter two intergers: ");
            inputValue = Console.ReadLine();
            value = int.Parse(inputValue);
            inputValue = Console.ReadLine();
        }
        public static int DisplayResult()
        {
            Console.WriteLine("the Sum is: ");
            Console.WriteLine("\nthe product is: ");
            Console.WriteLine("\nThe average is : ");
            Console.WriteLine("\nThe Squared is : ");
            Console.Read();
            return (DisplayResult());
        }
    }
}

Edited by Alexander, 19 October 2010 - 12:53 AM.
Please add [code] tags around your code