using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("===================================");

        Console.WriteLine("{0,35}","MENU");

        Console.WriteLine("===================================");

        Console.WriteLine("Press c or C : Find Area of Circle");

        Console.WriteLine("Press s or S : Find Area of Square");

        Console.WriteLine("===================================");

        Console.Write("Input your choice : ");

        char choice = char.Parse(Console.ReadLine());

        if (choice== 'c' || choice== 'C')

        {

            Console.WriteLine("You choose : \"Circle\" ");

            Console.Write("Input radius : ");

            float radius = float.Parse(Console.ReadLine());

            Console.WriteLine("===================================");

            Console.WriteLine("Area = {0:F}",3.141f*(radius*radius));

            Console.WriteLine("===================================");       

        }

        if (choice== 's' || choice== 'S')

        {

            Console.WriteLine("You choose : \"Square\" ");

            Console.Write("Input width : ");

            float width = float.Parse(Console.ReadLine());

            Console.Write("Input length : ");

            float length = float.Parse(Console.ReadLine());

            Console.WriteLine("===================================");

            Console.WriteLine("Area = {0:F}",width*length);

            Console.WriteLine("===================================");

        }

    }

}