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()

How can you pass a struct by reference in e, How can you pass a struct by r...

How can you pass a struct by reference in e?   The question is phrased in a tricky way because passing by reference is the default and only possible way to pass structs in e. I

Operating system, explain the various types of computer systems

explain the various types of computer systems

What is virtual memory, Virtual Memory is a way of extending a computer's m...

Virtual Memory is a way of extending a computer's memory by using a disk file to replicate add'l memory space. The OS remain track of these add'l memory addresses on the hard disk

Binary search, Binary Search Now that the basic framework is working, ...

Binary Search Now that the basic framework is working, it is time to begin implementing a few alternative search functions. Each of these search algorithms have strengths and

Algorithmic complexity theory, Algorithmic Complexity theory: Moreover...

Algorithmic Complexity theory: Moreover a similar situation occurs in broad to specific ILP systems when the inference rules are deductive thus they specialize. So at some sta

Explain the features of major scheduling algorithms, Explain the Features o...

Explain the Features of Major scheduling algorithms. The Features of Major scheduling algorithms is given below: FCFS - i.e. First come first served scheduli

Sort Wars, If quicksort is so quick, why bother with anything else? If bubb...

If quicksort is so quick, why bother with anything else? If bubble sort is so bad, why even mention it? For that matter, why are there so many sorting algorithms?

Why some languages are not decidable, Why some languages are not decidable ...

Why some languages are not decidable or even Turing - recognizable?  The  reason  that  there  are  uncountable  many  languages  yet  only  countably many  Turing  machines.

How do we prevent selected parameters of a module, How  do  I  prevent  sel...

How  do  I  prevent  selected  parameters  of  a  module  from  being  overridden  during instantiation? If a specific parameter within a module must be prevented from being ov

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