Interested to Buy Any Domain ? << Click Here >> for more details...
Child cObj = new Parent()
Wahts the output ?
- 8 Answers
- 19270 Views
- Patni, TCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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 |
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 |
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 |
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 |
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 |
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 |
Answer / giri
You can write below ways [Upcasting].
Child *cObj = new Parent();
| Is This Answer Correct ? | 5 Yes | 10 No |
What causes polymorphism?
what are the ways in which a constructors can be called?
What is Hashing and how is it done? Pictorial form?
What's the full form of STL?
what is object slicing
What is a macro? And how is a macro same as a template?
Is following functions are said to be overloaded? int add(int a,int b) char *add(int a,int b)
What is the Advantage of Interface over the Inheritance in OOPS?
Can anyone please explain runtime polymorphism with a real time example??at what ciscumstances we go for it??
Should you protect the global data in threads? Why or why not?
char* ptr = "Rahul"; *ptr++; printf("%s",ptr); What will be the output
Is react oop?
STL 
