What is the difference between realloc() and free(), Computer Engineering

Assignment Help:

The free subroutine frees a block of memory lastly allocated by the malloc subroutine. Undefined results happen if the Pointer parameter is not a valid pointer. If the Pointer parameter is a null value, no action will happen. The realloc subroutine changes the size of the block of memory pointed to by the Pointer parameter to the number of bytes specified by the Size parameter and returns a new pointer to the block. The pointer specified by the Pointer parameter must have been formed with the malloc, calloc, or realloc subroutines and not been deallocated with the free or realloc subroutines. Undefined results happen if the Pointer parameter is not a valid pointer.             

 

 


Related Discussions:- What is the difference between realloc() and free()

Truth tables, Any function can be expressed in a truth table.A truth table ...

Any function can be expressed in a truth table.A truth table lists all possible combinations ofinputs and gives the output produced in eachcase.Truth tables must include all combin

Give a simple example of dynamic modelling, Give a simple example of dynami...

Give a simple example of dynamic modelling using these notation A simple example using these notation is shown below in Figure:

Explain session layer of osi model, Explain Session Layer of OSI Model. ...

Explain Session Layer of OSI Model. The session layer manages, establishes and terminates communication sessions. Communication sessions contain service of requests and serv

How can we use metropolitan area network, Q. How can we use Metropolitan Ar...

Q. How can we use Metropolitan Area Network? A MAN, essentially a bigger versions of a LAN is designed to extend over an entire city. It may be single network like a cable tele

What is meant by maskable interrupts, A interrupt that can be turned off by...

A interrupt that can be turned off by the programmer is called as Maskable interrupt.

Define resolution versus accuracy in mouse, Q. Define Resolution versus Acc...

Q. Define Resolution versus Accuracy in mouse? Resolution of mouse is known in CPI (Counts per Inch) it implies that number of signals per inch of travel.  This implies the mou

Interconnection network, Interconnection Network Introduction Th...

Interconnection Network Introduction This unit discusses the types and properties of interconnection networks.  In multiprocessor systems, there are multiple I/O modules

What are program-invisible registers, What are program-invisible registers?...

What are program-invisible registers? Ans: the local and global descriptor tables are found in the memory system. To access and specify the address of these tables, program inv

Specify the default alignment, Specify the default alignment for the follow...

Specify the default alignment for the following field types: 'D' - Left, 'F'-Right, 'N'-Left, 'I'-Right, 'T'-Left.

Write-allocate and no-write-allocate policy in a cache, (a) How does a da...

(a) How does a data cache take advantage of spatial locality? Give an suitable example. (b) What are the basic differences between a write-allocate and no-write-allocate po

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