derived class accessing base class constructor

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is it posible for a derive class to call a constructr of base class like that
rectstyle = new Rectangle(double a,double b);

rectstyle is object of derive class
rectangle is base class

Posted 27-Aug-13 22:06pm

Innocent910

Updated 27-Aug-13 22:42pm

CPallini

v2

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John-ph 28-Aug-13 5:00am

A derived class inherits the behaviours of a base class which means a child inherits the characteristics of a parent. it's possible, right? Think the other way round. Actually in the above code you are not trying call the constructor but you are trying to assign an instance of base class object to its' own child which is not possible.

Innocent910 28-Aug-13 5:53am

ok thnx

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CPallini · Answer 1 · 2013-08-27T22:28:00

Solution 2

Derived class can call base constructor only in their own constructor, see, for instance:

Posted 27-Aug-13 22:28pm

CPallini

Dave963 · Answer 2 · 2013-08-30T03:14:00

Solution 3

Just do this...

In your rectstyle class create a constructor like this

public rectstyle(double a, double b)
:base (a,b)
{

}

Then just create the object like this...

rectstyle = new rectstyle (double a,double b);

Posted 30-Aug-13 3:14am

Dave963