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

Constant argument, Define  C o ns t a n t a r g u me n t : ...

Define  C o ns t a n t a r g u me n t : T h e a r gu m e n t c a n b e a c on s t a n t a r gu m e n t .    T h e c o

Area of curve, Write a program to find the area under the curve y = f(x) be...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Tree, Write algorithm and program for the conversion of a Tree to a Binary ...

Write algorithm and program for the conversion of a Tree to a Binary Tree

Define external static storage class - computer programming, Define Externa...

Define External Static Storage Class - Computer Programming? An external static is declared outside of all the functions and is obtainable to all functions in that program. The

Class & objects, how objects are initialized dynamically?

how objects are initialized dynamically?

Data structure and algorithm, implement two stacks in one array A[1...n] in...

implement two stacks in one array A[1...n] in such a way that neither stack overflows unless the total number of elements in both stacks together is n. For this you need to produce

Bankers algorithm, creating a system having five process from p0 to p4 and ...

creating a system having five process from p0 to p4 and five resource types. create the need matrix use the safe algorithm to test if the system is in safe mode.

Create a client program tracker, This project simulates an application call...

This project simulates an application called tracker for the Department of Transportation (DOT) in which highway traffic data is accumulated in real time using various sensing equi

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