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

Program to design list in c, Program to design list in c: Write a prog...

Program to design list in c: Write a program in c to insert the values in list void main() { int i=0; char a[20]; clrscr(); printf("Enter the line\n");

C program to copy the contents of a file, C Program to copy the contents of...

C Program to copy the contents of a file: void main()    {   ifstream fin("input.txt");   ofstream fout("output.txt");   char ch;   while (fin)       {

Assignment, Develop a C++ program that uses a while to determine the gross ...

Develop a C++ program that uses a while to determine the gross pay (in Dollars) for each of several employees. The company pays “straight-time” for the first 40 hours worked by ea

Program simulate a metropolitan subway train, You're going to simulate a me...

You're going to simulate a metropolitan subway train.  The train system will start out at Station #1, or Home  Station, and will service multiple stations along its route.

Fibonacci function by using simple recursive approach, Implement, in rPeANU...

Implement, in rPeANUt, the a Fibonacci function by using the simple recursive approach. The Fibonacci function can be implemented in c as follow: int fib(int x) {   if (x

C program for reverse the string , C Program for REVERSE THE STRING #i...

C Program for REVERSE THE STRING #include stdio.h> #include conio.h> #include string.h> void main() {           char name[30];           char *s;

Demonstration using moss open source machine translation, Demonstration usi...

Demonstration using Moss Open Source Machine Translation Project Description: Moses is an open source Statistical Machine Translation System. I need someone to provide me a d

Pattern, enter height of the shape: 1 3 5 3 1 3 5 7 5 3 5 7 9 7 5 3 5 7...

enter height of the shape: 1 3 5 3 1 3 5 7 5 3 5 7 9 7 5 3 5 7 5 3 1 3 5 3 1

Write procedure that compute recursive method, A function f is defined by t...

A function f is defined by the rule that f(n) = n if 0≤n≤3 and f(n) = f(n - 1) + 2f(n - 2) + 3f(n - 3) if n> 3. (a) Write a procedure that computes f by means of a recursive pro

Are comments included during compilation stage, Are comments included durin...

Are comments included during compilation stage and placed in EXE file as well? - No, comments encountered by compiler are disregarded. - Their only purpose is ease and guida

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