public static void Main()
string line = ("================================");
Console.WriteLine("{0,10}","MENU");
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 : ");
char choice = char.Parse(Console.ReadLine());
if(choice == 's' || choice == 'S')
Console.Write("Your choice \"Square\"");
Console.Write("Input width :");
int width = int.Parse(Console.ReadLine());
Console.Write("Input length :");
int length = int.Parse(Console.ReadLine());
Console.Write("Area = {0:F}",width*length);
else if(choice == 'c' || choice == 'C')
Console.WriteLine("Your choice \"Circle\"");
Console.Write("Input radius :");
double radius = double.Parse(Console.ReadLine());
Console.WriteLine("Area = {0:N} ",c*radius*radius);