static void Main(string[] args)
{
/*Person one = new Person();
* Console.WriteLine(one.name);
* Console.WriteLine(one.age);
* Console.WriteLine("and he is");
* Person.Walking();
* Console.ReadKey();*/
Abc.ToDo();
Console.ReadKey();
}
static void Main(string[] args)
{
Rectangle r = new Rectangle();
r.SetLength(5);
r.SetWidth(7);
Rectangle r2 = new Rectangle(3, 8);
Console.WriteLine(r.Area);
Console.WriteLine(r2.Area);
Rectangle r3 = new Rectangle(3, 8, 2, 2);
Console.WriteLine(r3.Area);
Abc a0 = new Abc();
a0.ToDo();
}