Describe difference between malloc()/free() & new/delete?, C/C++ Programming

Assignment Help:

for object, malloc allocates memory in heap however doesn't invoke object's constructor to initialize the object. new allocates memory & also invokes constructor to initialize the object. free() and malloc()  do not support object semantics, does not destruct and construct objects

For example :  string * ptr = (string *)(malloc (sizeof(string))) Are not secure, and does not compute the size of the objects that it construct

The following return a pointer to void int *p = (int *) (malloc(sizeof(int))); int *p = new int;

Are not extensible delete and new can be overloaded in a class "delete" first calls object's termination routine (for example. its destructor) and after that releases the space the object engaged on the heap memory. If an array of objects was developed using new, then delete ought to be told that it is dealing along with an array by preceding the name along with an empty []:-

Int_t *my_ints = new Int_t[10];

...

delete []my_ints;

 


Related Discussions:- Describe difference between malloc()/free() & new/delete?

Wap to print sum=1!+2!+3!+4!+....n!, WAP TO PRINT SUM=1!+2!+3!+4!+....N! ...

WAP TO PRINT SUM=1!+2!+3!+4!+....N! #include stdio.h> #include conio.h>   void main() {                    int n,i;                    float sum=0,fac

Example of structure, Example of structure: struct item {       ...

Example of structure: struct item {                 int element;                 node_ptr next; }; typedef node_ptr stack; stack create(void) {

Online poker web application, Project Description:  LOOKING TO DEVELOP ...

Project Description:  LOOKING TO DEVELOP A ONLINE POKER Web Application. WEBSITE WILL BE DEVELOPED OVER THE NEXT 6 MONTHS Duration & WILL REQUIRE FULL SOFTWARE CODING OF WEB

C program for even & odd no in any matrices , C Program for EVEN & ODD NO I...

C Program for EVEN & ODD NO IN ANY MATRICES #include stdio.h> #include conio.h> void main() {           int a[100][100];           int i=0,j=0,r,c,even=0,odd=0;

When i throw this object, A: Depends. Might be "zero" Objects which are ...

A: Depends. Might be "zero" Objects which are thrown must have a publicly accessible copy-constructor. The compiler is permitted to generate code which copies the thrown object

Boardcoloring, how to fill the blank spaces in the board of 4*4 matrix with...

how to fill the blank spaces in the board of 4*4 matrix with the minimum of 4 colors and the condition is the adjacent element should not have the same colour

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