static void Main()
{
Console.WriteLine("enter the First number");
string input = Console.ReadLine();
double num1, num2;
bool result = Double.TryParse(input, out num1);
if (!result)
{
Console.WriteLine("please enter the number");
return;
}
Console.WriteLine("enter second number");
result = Double.TryParse(Console.ReadLine(), out num2);
if (!result)
{
Console.WriteLine("please enter a number");
return;
}
Console.WriteLine("enter Add, Subtract, Divide");
CalucalateFactory factory = new CalucalateFactory();
Icalucalate obj = factory.GetCalucalation(Console.ReadLine());
obj.calucalate(num1, num2);
Console.ReadLine();
}
public Icalucalate GetCalucalation(string type)
{
Icalucalate obj = null;
if (type.ToLower().Equals("add"))
{
obj = new Add();
}
else if (type.ToLower().Equals("subtract"))
{
obj = new Subtract();
}
else if (type.ToLower().Equals("divide"))
{
obj = new Divide();
}
else
{
Console.WriteLine("we donot do that");
}
return(obj);
}
