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

Addition of array elements, Addition of array elements: #define rows 3 ...

Addition of array elements: #define rows 3 #define cols 3 void main() {                 int i=0,j=0,sum=0;                 int arr[rows][cols];

What are literals, Literals (Constants) Constants are data storage loca...

Literals (Constants) Constants are data storage locations whose address is not accessible for the user. Their value is not altered during the course of the program. Literal

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.

Asset pricing project, In the final project assignment you are asked to dev...

In the final project assignment you are asked to develop an OOP C++ class hierarchy for derivative pricing, using the binomial tree and Black-Scholes option pricing methods. You wi

Determine the canonical form, Rule: To determine the canonical form we s...

Rule: To determine the canonical form we should OR the min terms. A min term is defined as a Boolean equation of the input if the output is logic '1'. If the input is logic '1'

Produce an executable file, Requirements Create a "makefile" that w...

Requirements Create a "makefile" that will manage the construction of a program The name of the makefile must be: makefile The make file must produce an executable

Genetic disease, Many human diseases could be controlled by the knowledge o...

Many human diseases could be controlled by the knowledge of the gene’s structure and pattern. The human gene could be represented by four nucleotides. Each nucleotide is represente

Explain syntax rules for writing a destructor function, Syntax rules for wr...

Syntax rules for writing a destructor function Its name is the similar as that of the class to which it belongs, except that the first character of the name is the symbol t

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