Difference between delete and delete[]?
- 5 Answers
- 25753 Views
- Infosys, TCS, Virtusa, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sachin mahajan
When we want to free a memory allocated to a pointer to an
object then "delete" is used.
Ex
int * p;
p=new int;
// now to free the memory
delete p;
But when we have allocated memory for array of objects like
int * p= new int(10); //pointer to an array of 10 integer
then to free memory equal to 10 integers
delete []p;
NOTE: One can free the memory even by "delete p;" But it
will free only the first element memory.
| Is This Answer Correct ? | 70 Yes | 9 No |
Answer / laxman
delete is only just to delete a variable which is created
by new operator. delete[] , it deletes the array where the
varaialbe points .
| Is This Answer Correct ? | 24 Yes | 8 No |
Answer / vikas
If p is pointer to an array and is allocated memory on
heap, then delete p would call the destructor of the first
element but will free up the whole block. More info at:
http://www.cppquestions.com/viewtopic.php?f=27&t=13
| Is This Answer Correct ? | 14 Yes | 5 No |
Answer / namitha
delete is a function used to deallocate the storage space.
delete[] is a function used to deallocate the storage space
of an array.
| Is This Answer Correct ? | 11 Yes | 8 No |
Answer / sunita shukla
Delete p deallocate memory pointed to by p and delete []p deallocate array. But delete p will delete only p[0]. Other array's Size-1 entries will not be deleted and this memory will leak.
| Is This Answer Correct ? | 3 Yes | 0 No |
Explain overriding.
What is the array and initializing arrays in c++?
State two differences between C and C++.
Why is c++ so fast?
What is a terminating character in c++?
What is pointer in c++ with example?
What is a 'pure' virtual function and what's its use?
What is dev c++ used for?
What is stl containers in c++?
What is array in c++ pdf?
What is type of 'this' pointer?
What is a node class?
STL 
