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

Define a segment index or an internal index, The field that contains a segm...

The field that contains a segment index or an internal index is called ? Ans. Target datum consists of a segment index or an internal index.

Gantt chart and kiviat diagram, Q. What is Gantt chart and Kiviat diagram? ...

Q. What is Gantt chart and Kiviat diagram? Gantt chart: Gantt chart explains numerous activities of every processor with respect to progress in time in busy -overhead - id

State the web server security through ssl, Web server security through SSL ...

Web server security through SSL (Secure Socket Layer) As it is well known that the Intranets and internet are purely based on use of powerful web servers to deliver information

Secure systems development, Write an academic report on a significant softw...

Write an academic report on a significant software security exploit you have studied. Your report should include details such as, for example: The nature of the software vuln

Explain the term- signals, Explain the term- Signals -  Signals are use...

Explain the term- Signals -  Signals are used for communication between components -  Signals can be seen as real, physical signals -  Some delay should be incurred in a

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 traffic engineering, What is Traffic Engineering? Traffic engi...

What is Traffic Engineering? Traffic engineering gives the basis for analysis and design of telecommunication network to carry a specified traffic at an exact loss probability

What is referred as memory mapped i/o, What is referred as memory mapped I/...

What is referred as memory mapped I/O. The case in computers that employ only set of read and write signals and do not differentiate between memory and I/O address. This is kno

Explain about the public key cryptography, Explain about the Public Key Cry...

Explain about the Public Key Cryptography. Public Key Cryptography: It is a cryptographic system which uses two keys as a public key identified to everyone and a private

What are different adder circuits you studied, Half Adder (for addition of ...

Half Adder (for addition of two bits) Full Adder (for addition of three bits) Carry look ahead adder Carry save adder Carry propagate adder

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