(Memory Allocation and Deallocation Operators) Compare and contrast dynamic memory allocation and deallocation operators new, new [], delete and delete []:

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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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Answer 2

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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Answer 3

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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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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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Answer 6

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Answer 7

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;

Answer 8

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;

Answer 9

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Answer 10

Expert Solution & Answer

Answer 11

Program Plan Intro

To compare and contrast dynamic memory allocation and deallocation operators new, new[], delete and delete[].

Answer 12

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;

Answer 13

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(Memory Allocation and Deallocation Operators) Compare and contrast dynamic memory allocation and deallocation operators new, new [], delete and delete []:

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