Can i drop the [] while deleteing array of some built-in , C/C++ Programming

Assignment Help:

Can I drop the [] while deleteing array of some built-in type (char, int, etc)?

A: No. you can't

Sometimes programmers think that the [] in the delete[] p only present so the compiler will call the suitable destructors for all elements in the array. Due to this reasoning, they suppose that an array of some built-in type such as char or int can be deleted without the []. For example they suppose the following is valid code:

void userCode(int n)

{

char* p = new char[n];

...

delete p; //  ERROR! Should be delete[] p !

}

However the above code is wrong and it can cause a blow at runtime. Particularly, the code that's called for delete p is operator delete (void*), however the code that's called for delete[] p is operator delete[](void*). For the latter the default behavior is to call the former, however users are allowed to replace the latter along with a different behavior (in which case normally they would also replace the corresponding new code in operator new[](size_t)). If they replaced the delete[] code thus it wasn't compatible  along with the delete code, and you called the wrong one (that means  if you said delete p instead of delete[] p), you could end up with a disaster at runtime.


Related Discussions:- Can i drop the [] while deleteing array of some built-in

Explain control flow, Control Flow The control flow statements are used...

Control Flow The control flow statements are used when it is needed that the flow of the program is to be changed after taking some decision. This control flow statement theref

Simple program of c++ , Simple program of c++: int main() {    i...

Simple program of c++: int main() {    int   bushels;    float dollars, rate;                 cout                 cin >> dollars;                 cout

C program to find area of rectangle, Aim: To implement a program to find a...

Aim: To implement a program to find area of rectangle, surface area of box and volume of box using virtual functions. Code:                       class rect {

Advanced, how to create a shopping cart

how to create a shopping cart

How many levels deep can include files be nested, How many levels deep can ...

How many levels deep can include files be nested? - As such, there is no limit to number of levels of nested include files you can have however your compiler might run out of s

Program, program to check whether a given point lies inside a rectangle or ...

program to check whether a given point lies inside a rectangle or not

Wap to print the largest number from any 10 numbers, WAP TO PRINT THE LARGE...

WAP TO PRINT THE LARGEST NUMBER FROM ANY 10 NUMBERS #include stdio.h> #include conio.h>   void main()   {                    int a[10],i,max;

Single string programme, write a programme that allows a user to enter 5 di...

write a programme that allows a user to enter 5 distinct words and returns them as a single string

What is the issue which auto_ptr objects address?, A: If you employ auto_pt...

A: If you employ auto_ptr objects you would not need to be concerned along with heap objects not being deleted even if the exception is thrown.

File IO, I''m trying to write a function that prints the substring if it is...

I''m trying to write a function that prints the substring if it is found in the string, and after it prints it deletes it from the string so i could print the next substring if it

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd