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

Recursion to an iterative procedure, The data structure required to convert...

The data structure required to convert a recursion to an iterative procedure is  Stack is the data structure required to convert a recursion to an iterative procedure

Combinational logic, At a particular moment in time the output of a COMBINA...

At a particular moment in time the output of a COMBINATIONAL logic circuit depends uponthe inputs to the circuit at the same instant.(Unlike sequential logic circuits where the out

Determine the statement for array, Q. Determine the statement for array? ...

Q. Determine the statement for array? Determine the statement ALIGN A[i] WITH B[i] This statement aligns every A[i] with B[i] as displayed in Figure below. Figure

Propositional inference rules, Propositional Inference Rules: Proposit...

Propositional Inference Rules: Propositional Inference Rules Equivalence rules are mostly useful because of the vice-versa aspect, that means like we can search backwards and

Determine the features of keyboards, Determine the features of keyboards ...

Determine the features of keyboards Common features on general-purpose keyboards are cursor-control keys. Functions keys are used to enter frequently used operations in a singl

I want a computer science homework tutor, I can send you the lecture notes ...

I can send you the lecture notes and assignments, and you will walk me through (either record a screencast, or kind on the assignments in red colored font) steps on how to do the a

Write C++ for following question., We are planning an orienteering game. Th...

We are planning an orienteering game. The aim of this game is to arrive at the goal (G) from the start (S) with the shortest distance. However, the players have to pass all the che

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

Sun and nis law, Q. What is Sun and Nis Law? The Sun and Ni's Law is a ...

Q. What is Sun and Nis Law? The Sun and Ni's Law is a simplification of Amdahl's Law and Gustafson's Law. The basic concept underlying Sun and Ni's Law is to find solution to a

Describe about the forms-DBMS, Describe about the Forms- DBMS Forms ar...

Describe about the Forms- DBMS Forms are generally known as data entry screens as they are user interface that allows data in the tables to be viewed, edited or entered. Forms

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