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

Queue depth should be greater than zero, Tell me which queue having present...

Tell me which queue having present queue depth should be greater than zero? Ans) Event queues Open MQ Explorer by selecting Start > Programs > IBM WebSphere MQ > WebSphere

Determine the signed numbers are used in binary arithmetic, When signed num...

When signed numbers are used in binary arithmetic, then which one of the notations would have unique representation for zero ? Ans. When signed numbers are utilized in binary ar

Backward chaining, Backward Chaining: In generally given that we are o...

Backward Chaining: In generally given that we are only interested in constructing the path whether we can set our initial state to be the theorem statement and search backward

Floating-point processing and instruction encoding, write a program that e...

write a program that evaluate the following arithmetic expression: ((A+B) /C) * ((D-A)+E) assign test value to the variable and display the resulting value.

What do you mean by single construct in fortan, Q. What do you mean by Sing...

Q. What do you mean by Single Construct in FORTAN? Single construct specifies the associated structured block is executed by just one thread in team (not essentially the master

Two ways for restricting the value range for a domain, What are the two way...

What are the two ways for restricting the value range for a domain? By specifying fixed values. By stipulating a value table.

DBMS, what is dbms goal?

what is dbms goal?

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