static void Main(string[] args)
{
Console.WriteLine("Enter an interger as radius:");
string strrad = Console.ReadLine();
int intrad = Int32.Parse(strrad);
circle circle = new circle(intrad);
double area = circle.Area(intrad);
Console.WriteLine($"The area is {area}");
double circum = circle.Circum(intrad);
Console.WriteLine($"The circumfrance is {circum}");
Console.WriteLine("Enter an interger as side:");
string strside = Console.ReadLine();
int intside = Int32.Parse(strside);
//circle Square = new circle(intrad);
Square s = new Square(3);
area = s.Area(intside);
Console.WriteLine($"The area is {area}");
double p = s.Perimeter(intside);
Console.WriteLine($"The circumfrance is {p}");
}
static void Main(string[] args)
{
Console.WriteLine("Radius:");
double r = double.Parse(Console.ReadLine());
circle c = new circle(r);
Console.WriteLine();
Console.ReadKey();
}