using System;

public class Program

{

    public static void Main()

    {

        String shape ;

        double r,w,l,area ;

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

        string m = "MENU" ;

        Console.WriteLine("{0,20}",m) ;

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

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

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

        shape = Console.ReadLine() ;

        if (shape=="s"||shape=="S")

        {

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

            Console.Write("Input width  : ") ;

            w = double.Parse(Console.ReadLine()) ;

            Console.Write("Input length : ") ;

            l = double.Parse(Console.ReadLine()) ;

            area = w*l;

        Console.WriteLine("Area = {0:f2}",area) ;

        }

        if (shape=="c"||shape=="C")

        {

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

            Console.Write("Input radius : ") ;

            r = double.Parse(Console.ReadLine()) ;

            area = 3.141 * r * r;

        Console.WriteLine("Area = {0:f2}",area) ;

        }

    }

}