Define memory allocation functions, Computer Engineering

Assignment Help:

The various memory allocation functions are described below:

(i) malloc( ): It is a memory allocation function that assigns requested size of bytes and returns a pointer to the first byte of the allocated space. The malloc function returns a pointer of type void so we can allocate it to any type of pointer.

(ii) calloc( ): It is another memory allocation function that assigns space for an array of elements, initializes them to zero and then returns a pointer to the memory. This function is normally used for request memory space at run time. Whereas malloc allocates a single block of storage space, calloc allocates multiple block of storage, each of the similar size, and then sets all bytes to zero

(iii) realloc( ): realloc is a memory allocation function that changes the size of previously allocated space. Sometime it may happen that the allocated memory space is larger than what is needed or it is less than what is needed. In both cases, we can change the memory size already allocated with the help of the realloc function called as reallocation of memory

 


Related Discussions:- Define memory allocation functions

What is drag, Move the mouse pointer over the object you wish to drag, and ...

Move the mouse pointer over the object you wish to drag, and then hold down the left mouse button. Whereas holding the mouse button, move the mouse pointer (and the object) to the

Determine about the verilog task, Determine about the Verilog Task - Ta...

Determine about the Verilog Task - Tasks are capable of enabling a function as well as enabling other versions of a Task. - Tasks also run with a zero simulation however the

Pci bus transactions - computer architecture, PCI bus transactions: PC...

PCI bus transactions: PCI bus traffic is prepared of a series of PCI bus transactions. Each transaction is build up of an address phase that is followed by 1 or more data phas

Simplify the expressions using boolean postulates, Simplify the given expre...

Simplify the given expressions using Boolean postulates XY + X‾Z‾  + XY‾Z (XY + Z) Ans. XY + X‾Z‾ + XY‾Z (XY + Z) = XY + X‾Z‾ + XY‾Z (XY + Z) = XY + X‾Z‾  + XXYY‾Z

Poor human support - obstacle to information system, Poor human support - O...

Poor human support - Obstacle to Information System The full utility of an IS will only be realised if it is properly supported by the users. Technology is never a solution in

Convert, haw to convert context free grammar to regular grammar

haw to convert context free grammar to regular grammar

To show - hide the ssi document in the page, Step 1: Click on Edit Step ...

Step 1: Click on Edit Step 2: Select reference Step 3: Select Translation Step 4: Click on SSI Step 5: For showing the SSI file; choose one of the following options:

Arrays, how to calculate students''s averange test scores

how to calculate students''s averange test scores

EME, How can i made Carnot engine

How can i made Carnot engine

Objectives-classification of parallel computers , Objectives After goi...

Objectives After going through this unit, you should be able to: Describe the diffrent criteria on which classification of parallel computers are based; Examine the

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