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

Illustrate what is a astrophysics, Q. Illustrate what is a astrophysics? ...

Q. Illustrate what is a astrophysics? Answer:- Examine of galaxies, stars and the creation of the universe including predictions about how it will proceed from here.

Example of bitwise-and operator, Example of Bitwise-AND Operator In the...

Example of Bitwise-AND Operator In the following example, the bitwise-AND operator (&) compares the bits of two integers, nNumA and nNumB: // Example of the bitwise-AND oper

Find out the number of control lines for 32 to 1 multiplexer, The number of...

The number of control lines for 32 to 1 multiplexer is ? Ans. For 32 (2 5 ) the number of control lines and to select one i/p between them total 5 select lines are needed.

How can we convert infix expression to a postfix expression, One can change...

One can change an infix expression to a postfix expression using a By using Stack you can convert infix expression to a postfix expression

What is verilog case 1, What is verilog case (1) ? wire [3:0] x; al...

What is verilog case (1) ? wire [3:0] x; always @(...) begin case (1'b1) x[0]: SOMETHING1; x[1]: SOMETHING2; x[2]: SOMETHING3; x[3]: SOMETHING4; endcase

Why a function should have at least one input, Why a function should have a...

Why a function should have at least one input? There is no strong reason for this in verilog. I think this restriction isn't removed fin SystemVerilog. Some requirements where

3 variable k-maps, 3-variable K-maps have 8 squares which arenormally arran...

3-variable K-maps have 8 squares which arenormally arranged in 4 columns and 2 rows.Columns are labeled with 2 variables. The columns are arranged so that either A or B cha

Digital electronics, Draw a circuit of an NMOS inverter and explain its ope...

Draw a circuit of an NMOS inverter and explain its operation

Java Applet, Simple codes for robot using applet

Simple codes for robot using applet

What is pci bus, What is PCI bus? The Peripheral component interconnect...

What is PCI bus? The Peripheral component interconnect(PCI) bus is a standard that handles the functions found on a processor bus but in a standardized format that is independe

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