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 automated and manual systems, Q. Explain Automated and Manual syste...

Q. Explain Automated and Manual systems? Automated and Manual systems: The system that doesn't need human intervention is known as'Automated system'. In this system whole proce

Unit test an mvc application, Is it possible to unit test an MVC applicatio...

Is it possible to unit test an MVC application without running the controllers in an ASP.NET process? Ans) Yes, all the features in an asp.net MVC application are interface ba

Example of ann - artificial intelligence, Example of ANN - artificial intel...

Example of ANN - artificial intelligence: ANNs look like this:   Notice that the x, w, z and y represent actual valued weights and that every the edges in this graph

Engineering and managerial economics, write a short note on good blend of e...

write a short note on good blend of engineering and managerial economics

Episodes - artificial intelligence , Episodes - artificial intelligence: ...

Episodes - artificial intelligence: If an agent's current choice of action not based on its past reactions, then the environment is known as episodic. In the non-episodic envi

Mention the various IC logic families, Mention the various IC logic familie...

Mention the various IC logic families. Ans. Different  IC Logic Families: Digital IC's are fabricated through employing either the Unipolar or the Bipolar Technologies and are te

Explain concept of temporal parallelism, Concept of Temporal Parallelism  ...

Concept of Temporal Parallelism  In order to make clear what is meant by parallelism inherent in solution of a problem, let's discuss an example of submission of electricity b

Explain the various interface circuits, Explain the various interface circu...

Explain the various interface circuits.  An I/O interface having of circuitry required to connect an I/O device to computer bus. One side having of a data path with its associa

What are called stalls, What are called stalls? An alternative represen...

What are called stalls? An alternative representation of the operation of a pipeline in the case of a cache miss gives the function performed by every pipeline stage in each cl

Define hit ratio, Define Hit ratio. The performance of cache memory is ...

Define Hit ratio. The performance of cache memory is frequently measured in terms of quantity called hit ratio. Hit-Find a word in cache. Miss-Word is not found in cache.

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