build errors

Question

Hi, 

 

When i run the code for my Rectangle application get an error for build error.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace My_Rectangle_application

{

class Program

{

static void Main(string[] args)

{

//member variables

double length;

double width;

public void Acceptdetails()

{

length = 4.5;

width = 4.5;

}

public double GetArea()

{

return length * width;

}

public void Display()

{

Console.WriteLine("Length: {0}", length);

Console.WriteLine("Width: {0}", width);

Console.WriteLine("Area: {0}", GetArea());

}

}

class ExecuteRectangle

{

static void Main(string[] args)

{

Rectangle r = new Rectangle();

r.Acceptdetails();

r.Display();

Console.ReadLine();

}

}

}

 Please help 

What should i do?