Child cObj = new Parent() Wahts the output ?

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Child cObj = new Parent()
Wahts the output ?

Question Posted / deepthi

8 Answers
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Child cObj = new Parent() Wahts the output ?..

Answer / deepthi

An error. We cant create such kinda objects.

Is This Answer Correct ?

20 Yes

5 No

Child cObj = new Parent() Wahts the output ?..

Answer / bhavin pandya

It will give yo Error :-
Object reference not set to an instance of an object.

If you want to create object then

Child cObj = new Child()
this is the right way

Is This Answer Correct ?

8 Yes

3 No

Child cObj = new Parent() Wahts the output ?..

Answer / austin j seelan

Child cObj = new Parent()
This will through the compiletime error.
but we can create an instance like the foll.way
parent objparent = new child()

Is This Answer Correct ?

7 Yes

2 No

Child cObj = new Parent() Wahts the output ?..

Answer / bangarraju

This is the DownCasting,but using like this
Child* obj=down_cast<Child* >(Parent) either using RTTI
mechanism in C++

Is This Answer Correct ?

1 Yes

0 No

Child cObj = new Parent() Wahts the output ?..

Answer / donga bangarraju

sorry for the earlier post, this output is giving error like
initializing cannot convert to Paretn* to Child*, if u want
correct this code write like this, this is downcasting or
using RTTI mechanism in C++;

Parent* p =new Child;
Child* obj= dynamic_cast<Child*>(p);

Is This Answer Correct ?

1 Yes

1 No

Child cObj = new Parent() Wahts the output ?..

Answer / aditya

Its java syntax where there is no pointers.
So its dynamic method dispatch which is same as virtual
functions of c++.

Is This Answer Correct ?

0 Yes

0 No

Child cObj = new Parent() Wahts the output ?..

Answer / chetan

it will execute without an error. if Parent class is
parent/base class and child is the child/drive class which
inherit parent class.
In the other worlds you are invoking drive class method with
the reference of base class.

Is This Answer Correct ?

3 Yes

3 No

Child cObj = new Parent() Wahts the output ?..

Answer / giri

You can write below ways [Upcasting].

Child *cObj = new Parent();

Is This Answer Correct ?

5 Yes

10 No

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