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

Estimate the natural frequency and damping factor, On the Moodle site just ...

On the Moodle site just below the assignment you will find data from a slow sine sweep test conducted on a car on a "four-post" road simulator for the frequency range 0 to 20 Hz in

Control hazard and delayed branching, Described Instruction or control haza...

Described Instruction or control hazard? Ans: The pipeline can be stalled due to delay in the availability of an instruction. For instance, this may be a result of a miss in t

Find out the access time of ROM using bipolar transistors, The access time ...

The access time of ROM using bipolar transistors is about ? Ans. About 1 µ sec is the access time of ROM using bipolar transistors.

What is bea weblogic?, Ans) BEA Web Logic is a J2EE application server and ...

Ans) BEA Web Logic is a J2EE application server and also an HTTP web server by BEA Systems of San Jose, California, for UNIX, Linux, Microsoft Windows, and other platforms. Web Log

Development of information system, Development of information system must b...

Development of information system must be considered as capital investment: The developer of an information system must think about different solutions of a particular problem and

Add multiple layout cells, Q. Add Multiple Layout Cells ? Next you will...

Q. Add Multiple Layout Cells ? Next you will add three layout cells below the logo cell you just created. Afterwards you will insert page's navigation buttons in these cells.

How do i publish an xml message, Follow these steps: 1. Produce XML from...

Follow these steps: 1. Produce XML from the DOM document tree. 2. Serialize the generated DOM document to a StringWriter. 3. Call toString on the StringWriter and pass it into

Describe the types of flip-flops and latches, Describe the types of flip-fl...

Describe the types of flip-flops and latches. Flip-flops are of two types as illustrated below: a. Positive edge triggered b.  negative edge triggered Latches are

print the sum of the numbers in the file, Make a file which kepts on every...

Make a file which kepts on every line a letter, a space, and a real number.  For example, it may look like this: e 5.4 f 3.3 c 2.2 f 1.1 c 2.2 Write a script that uses textscan to

Differentiate between the message and method in c++, Message in C++ : *...

Message in C++ : * Objects converse by sending messages to each other. * A message is sent to invoke a method in C++.   Method in C++: * Gives response to a message

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