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

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.

Posted Date: 3/19/2013 8:44:57 AM | Location : United States







Related Discussions:- Can i drop the [] while deleteing array of some built-in , Assignment Help, Ask Question on Can i drop the [] while deleteing array of some built-in , Get Answer, Expert's Help, Can i drop the [] while deleteing array of some built-in Discussions

Write discussion on Can i drop the [] while deleteing array of some built-in
Your posts are moderated
Related Questions
Binary Options EA for DirectFX and SignalPush Project Description: I want a programmer who will build an EA based on my three types of Binary strategy's using two Indicators.

Program is to read the contents of a file: void main()    {   ifstream fin("ascii.txt");   char ch;   while(! fin.eof())     {   fin>>ch;   cout     }

#quesdifferentiate betweenrelocatable and self relocating program with exampletion..

At a shop of marbles, packs of marbles are prepared. Packets are named A, B, C, D, E …….. All packets are kept in a VERTICAL SHELF in random order. Any numbers of packets with thes

Create a .cpp program that verifies the strength of a password that a user is entering is strong (complex/secure) enough. In the main area of the program, prompt the user to enter

This task involves creating a new class(es) that will allow the system to playback pattern sequences using the Neo  Freerunner  hardware. The first thing to note is that the vibrat

what is virtual datatype


Question 1 Write a program that accepts two numbers from the user and swaps the two numbers without using a temporary variable Question 2 Write a program that accepts a 3x

find largest clique present in graph