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

Car rental project, I need a project on car rental system using c programmi...

I need a project on car rental system using c programming only of college level

Write a program that calculates circumference and area, Write a program cal...

Write a program called A1Q3, that reads it the radius of a circle as an integer and prints the circle's diameter, circumference and area.  Use a constant value for pi.  Do all calc

Write a function that computes the total interest charged, You are going to...

You are going to write a function that computes the total interest charged on a credit card before it is paid off. List all the inputs the function will need.

Record of student and calculating marks using ctotal, reocord of a student ...

reocord of a student and a function ctotal to calculate the marks of any three subject by using ctotal() function

C program for function of average, C program for function  of average ...

C program for function  of average int average(int); void main() {           int max=0,c=0;           clrscr();           printf("ENTER THE LIMIT OF INPUT FOR AV

Write a program to test the class, Problem Implement a class called emp...

Problem Implement a class called employee that contains name, employee number and department code. Include a member function getdata() to get data from user and store it in the

In binary mode how can i open a stream?, A: Use std::ios::binary. Some o...

A: Use std::ios::binary. Some operating systems differentiate among text and binary modes. In text mode, end-of-line sequences and perhaps other things are translated; in binary

Lcm, lcm program.

lcm program.

Why php is sometimes called as embedded scripting language, Why PHP is some...

Why PHP is sometimes called as embedded scripting language? PHP is a high level language that is used to allow users to write and understand it in human readable form and also

Calculate the average assignment grade, 1. The main program must be in a fi...

1. The main program must be in a file called A4.cpp 2. The data must be read in from a data file.  The user must enter the filename.  A sample data file will be provided on Mood

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