
EBK C HOW TO PROGRAM
8th Edition
ISBN: 9780133964639
Author: Deitel
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Textbook Question
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Chapter 18, Problem 18.6E
(Memory Allocation and Deallocation Operators) Compare and contrast dynamic memory allocation and deallocation operators new, new [], delete and delete []:
Expert Solution & Answer

Program Plan Intro
To compare and contrast dynamic memory allocation and deallocation operators new, new[], delete and delete[].
Explanation of Solution
The following table shows the differences.
S. No. | New | Delete | New[] | Delete[] |
1. | Dynamically allocates memory for a variable or object. | Dynamically de-allocates memory for a variable or object. | Dynamically allocates memory for an array. | Dynamically de-allocates memory for an array. |
2. | Arguments passed to initialize class constructor | No arguments needed to be passed to call destructor | Arguments passed to initialize array size (bytes). | No arguments needed to be passed to call destructor. |
3. | Memory de-allocation must be done using delete operator. | Memory allocation must be done using new operator. | Memory deallocation must be done using delete[] operator. | Memory allocation must be done using new[] operator. |
4. | Returns address of allocated object. | Returns void() and sets memory to NULL. | Returns address of first element of allocated array. | Returns void() and sets all memory to NULL. |
5. | For example, int *xPtr; xPtr= new int; | For example, delete xPtr; | For example, int *xPtr; xPtr= new int[10]; | For example, Delete[] xptr; |
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Chapter 18 Solutions
EBK C HOW TO PROGRAM
Ch. 18 - (Memory Allocation and Deallocation Operators)...Ch. 18 - (Overloading the Parentheses Operator) One nice...Ch. 18 - (Complex Class) Consider class Complex shown in...Ch. 18 - (HugeInt Class) A machine with 32-bit integers can...Ch. 18 - (RationalNumber Class) Create a class...Ch. 18 - Prob. 18.11E
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