static void Main(string[] args)
{
hesap hsp = new hesap();
int snc = hsp.kareal(5);
Console.WriteLine(snc);
Console.ReadKey();
mathclass mc = new mathclass();
double snc2 = mc.karekok(9);
Console.WriteLine(snc2);
Console.ReadKey();
}
public int topla(int b)
{
mathclass mc = new mathclass();
return(b + b);
}