static void Main(string[] args)
{
copy obj = new copy("abdullah", 240);
obj.objectt();
copy obj1 = new copy(obj);
obj.objectt();
//w3 school
//Console.WriteLine(Math.Round(2.6));
//Console.WriteLine(Math.Sqrt(4));
Console.ReadKey();
}
public copy(copy a) //copy constuctur
{
Name = a.Name;
Roll = a.Roll;
}
