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

Hazard, how to calculate delay for hazard?

how to calculate delay for hazard?

Define underflow and overflow, Define underflow and overflow. Underflow...

Define underflow and overflow. Underflow: If the result the arithmetic operation including n-bit numbers is too small to show by n-bits, underflow is said to occur. Overflow

Operating system, define request edge and assignment edge

define request edge and assignment edge

What is called network, Network with point-to-point link is known as (...

Network with point-to-point link is known as (A) Fully Connected Network        (B)  Half Connected Network (C)  Duplex Connected Network    (D)  None of these Ans:

Illustrate about object oriented development, Illustrate about object orien...

Illustrate about object oriented development object oriented development is not direct way of system development as in this approach a holistic view of application domain is co

Which instruction is use in each process before proceeding, Before proceedi...

Before proceeding with its execution, each process must acquire all the resources it needs is called ? Ans. Hold and Wait is requires in each process should acquire all the res

Karnaugh maps, Minimisation using Boolean algebra is not always straight fo...

Minimisation using Boolean algebra is not always straight forward and sometimes it is not obvious if a further manipulation would give a simpler circuit. Karnaugh maps are a muc

What is linq, It sets for Language Integrated Query. LINQ is collection of ...

It sets for Language Integrated Query. LINQ is collection of standard query operators that gives the query facilities into .NET framework language like C# , VB.NET.

What is CRC, In a frame transmission, CRC stands for? CRC stands for Cy...

In a frame transmission, CRC stands for? CRC stands for Cyclic Redundancy Check, in a frame transmission.

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