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

Strings, write a c program to find input string using strlen(), strcpy(), s...

write a c program to find input string using strlen(), strcpy(), strcat(),strncat(), strcmp().

Fraction coding, Create a program that asks the user for two integers which...

Create a program that asks the user for two integers which represent the numerator and denominator parts of fraction. Print out a simplification of the fraction. Example: Enter th

Basic C++ Velocity and Momentum Program, Write a program that does the foll...

Write a program that does the following: Calculates the Velocity and Momentum of an object. The formula for the velocity is V=d/t and the formula Momentum is m=mass*velocity. Your

New customer, #questionhow can i add new customer and alot him a new unique...

#questionhow can i add new customer and alot him a new unique id ..

Looping, Write a programme to display the patern.. A A B A C B A B C...

Write a programme to display the patern.. A A B A C B A B C A B A A

Minimum shelves, t a shop of marbles, packs of marbles are prepared. Packet...

t a shop of marbles, packs of marbles are prepared. Packets are named A, B, C, D, E …….. All packets are kept in a VERTICAL SHELF in random order. Any numbers of packets with these

Explain call by reference, Call by Reference Passing variables(paramete...

Call by Reference Passing variables(parameters) to a function in C can be done in two ways - pass by value, also called as call by value and pass by address or also known as ca

Program of three numbers arguments and returns the sum , Define a procedure...

Define a procedure that takes three numbers as arguments and returns the sum of the squares of the two larger numbers.

Write a program to illustrate the call by reference, Write a Program to ill...

Write a Program to illustrate the Call by Reference? Here is an illustration: #include . int compute_sum(int *n); int main( void) { int n=3, sum; printf("%d\n",n); /

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