After p = new fred[n], how does the compiler know about , C/C++ Programming

Assignment Help:

After p = new Fred[n], how does the compiler know about n objects to be destructed throughout delete[] p?

A:  The run-time system hold the number of objects, n, somewhere where it may be retrieved if you know the pointer, p only. There are two famous techniques that do this. Both of these technique are in use trhough commercial-grade compilers, both have tradeoffs, & neither is perfect. These techniques are following:

Over-allocate the array & put n only to the left of the first Fred object. Employ an associative array along with p as the key and n as the value.

 


Related Discussions:- After p = new fred[n], how does the compiler know about

Solve, solve for radius(R) of a circle of its area is to be inputted by a u...

solve for radius(R) of a circle of its area is to be inputted by a user. also display compute the circle diameter hint: area= pir21 pi=2.1416

Explain some string oriented library functions, Explain some String Oriente...

Explain some String Oriented Library Functions? To make simpler string processing we can use special string oriented library functions. Mainly the C compilers include library f

Define some important point for bit fields with structures, Define some Imp...

Define some Important Point for bit fields with structures? Only n lower bits will be assigned to an n bit number thus type cannot take values larger than 15 (4 bits long)

C++ programming, give a program to accept and print 2_D Array

give a program to accept and print 2_D Array

Computes the ackermann-peter a m-n function, (a) Write a procedure that com...

(a) Write a procedure that computes the Ackermann-Peter a(m,n) function. (b) Write a helper procedure that only allows the calculation of the Ackermann-Peter function for 0≤m

Stand-alone dsp application, You are required to write a stand-alone DSP ap...

You are required to write a stand-alone DSP application in the C programming language. The overall objective of this application is to convert a signal from the time domain to t

Write a program that finds the minimum total number of shelv, Write a progr...

Write a program that finds the minimum total number of shelves, including the initial one required for this loading process.

Reverse digit function, how can i write reverse digit function like writing...

how can i write reverse digit function like writing 1234 and printing 4321

The Shell or Command Line Interpreter is the fundamental Use, 1. The shell ...

1. The shell must support the following internal commands: i. cd - Change the current default directory to . If the argument is not present, report the current directory. If t

Friend function in c++, Friend function in c++: class miles; class ...

Friend function in c++: class miles; class km  {    float value;    public :   // void input();     km convert(km  ,int a ) ;    void output()    {

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