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

Explain asynchronous decade counter, Draw the circuit diagram of Asynchrono...

Draw the circuit diagram of Asynchronous decade counter and explain its working. Ans: To  design  a  circuit diagram of decade  asynchronous  counter  initially  we  dr

What do you meant by erp, Question 1: What do you meant by ERP? What ar...

Question 1: What do you meant by ERP? What are the benefits of ERP? Definition of ERP Question 2: Describe briefly the advantages of the ERP. Explanation of six advanta

What is single program multiple data, Q. What is Single Program Multiple Da...

Q. What is Single Program Multiple Data (SPMD) SPMD is in fact a "high level" programming model which can be built on any arrangement of previously described parallel programmi

State the scope of security policy, State the scope of security policy ...

State the scope of security policy The scope of security policy depends on aspects such as the size of the Intranet site, type of information hosted on it, and the number of u

What are condition code flags, What are condition code flags? The proce...

What are condition code flags? The processor keeps track of information about the results of several operations for use by subsequent conditional branch instructions. This is a

Advantages and disadvantages of shared memory programming, Q. Show Advantag...

Q. Show Advantages and Disadvantages of Shared Memory Programming? Advantages of Shared Memory Programming Data sharing between processes is both rapid and uniform bec

What is model view controller (mvc), Model-View-Controller (MVC) is a desig...

Model-View-Controller (MVC) is a design pattern in which "the user input, the modelling of the external world and the visual feedback to the user are explicitly splitted and handle

Advantage of doubly linked list over singly linked list, What is the advant...

What is the advantage of doubly linked list over singly linked list?       Ans: Benefits of the doubly linked list over singly linked list 1. A doubly linked list can be pas

Disadvantages of edi(electronic data interchange), Disadvantages  1.  T...

Disadvantages  1.  The X12 standard is so large and general  2.  EDI communications negotiate a technical agreement to explain exactly what subset of EDI they will use

Show the process of message passing, Q. Show the process of message passing...

Q. Show the process of message passing? The subsequent issues are determined by system in process of message passing: 1)  Whether receiver is prepared to receive message

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