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

Signed 1’s complement representation, Q. Signed 1s complement representatio...

Q. Signed 1s complement representation? Another possibility that is also simple is use of signed 1's complement. Signed 1's complement has a principal. Add both numbers includi

Explain about zip drive, Q. Explain about Zip Drive? Zip Drive: Loads...

Q. Explain about Zip Drive? Zip Drive: Loads of files, Volumes of data have definitely increased onus on today's computer user and protection of this data is what bugs every

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

Describe about immediate addressing mode, Q. Describe about Immediate Addre...

Q. Describe about Immediate Addressing mode? When an operand is interpreted as an immediate value for example LOAD IMMEDIATE 7 it is actual value 7 which is put in CPU register

Human intelligence in culture - artificial intelligence, Human intelligence...

Human intelligence in culture: Understand human intelligence in culture  "AI" can be seen as just the latest tool in the philosopher's toolbox for answering questions about

What is control unit, What is Control Unit Control Unit: The control u...

What is Control Unit Control Unit: The control unit issue control signals to perform exact operation and it directs the entire computer system to carry out keeps program instr

Explain progressive control, Explain the term Progressive Control. Pro...

Explain the term Progressive Control. Progressive Control: Step by step system is an illustration of progressive control. The connection is established in stages, in respo

Show the programmes for parallel systems, Q. Show the Programmes for Parall...

Q. Show the Programmes for Parallel Systems? Adding elements of an array using two processor      int sum, A[ n] ;  //shared variables

What are the types of data warehouses, What are the types of data warehouse...

What are the types of data warehouses? Various types of data warehouses are illustrated below: a) Financial Data Warehouses b) Insurance Data Warehouses c) Human Resou

Multiple stack, how to implement the multiple stack

how to implement the multiple stack

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