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Welcome to the Memory Allocation and Variable Scope MCQs Page

Dive deep into the fascinating world of Memory Allocation and Variable Scope with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Memory Allocation and Variable Scope, a crucial aspect of Object Oriented Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Memory Allocation and Variable Scope, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Object Oriented Programming.

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Check out the MCQs below to embark on an enriching journey through Memory Allocation and Variable Scope. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Object Oriented Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Memory Allocation and Variable Scope. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Memory Allocation and Variable Scope MCQs | Page 3 of 6

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Q21.
Delete operator _________________

a.

Can be used on pointers with null value

b.

Can be used on pointers with void value

c.

Can be used on pointer with value 0

d.

Can be used on pointer with any value

Discuss
Answer: (c).Can be used on pointer with value 0
Q22.
When delete operator is used ___________________ (If object has a destructor)

a.

Object destructor is called after deallocation

b.

Object destructor is called before deallocation

c.

Object destructor is not used

d.

Object destructor can be called anytime during destruction

Discuss
Answer: (b).Object destructor is called before deallocation
Q23.
If delete is applied to an object whose l-value is modifiable, then _______________ after the object is deleted.

a.

Its value is defined as null

b.

Its value is defined as void

c.

Its value is defined as 0

d.

Its value is undefined

Discuss
Answer: (d).Its value is undefined
Q24.
How many variants of delete operator are available?

a.

Only 1

b.

Only 2

c.

Only 3

d.

Only 4

Discuss
Answer: (b).Only 2
Q25.
Which is the correct syntax to delete a single object?

a.

delete *objectName;

b.

objectName delete;

c.

delete objectName;

d.

objectName *delete;

Discuss
Answer: (c).delete objectName;
Q26.
Which is the correct syntax to delete array of objects?

a.

delete [] objectName;

b.

delete * objectName;

c.

objectName[] delete;

d.

delete objectName[];

Discuss
Answer: (a).delete [] objectName;
Q27.
Which cases among the following produces the undefined result?

a.

delete [] on an independent object

b.

delete on an object array

c.

delete [] on an object and delete on object array

d.

Undefined result is never produced

Discuss
Answer: (c).delete [] on an object and delete on object array
Q28.
The delete operator __________________

a.

Invokes function operator delete

b.

Invokes function defined by user to delete

c.

Invokes function defined in global scope to delete object

d.

Doesn’t invoke any function

Discuss
Answer: (a).Invokes function operator delete
Q29.
For objects that are not of class type ______________

a.

Global delete operator is invoked

b.

Local delete operator is invoked

c.

Global user defined function is invoked

d.

Local function to delete object is called

Discuss
Answer: (a).Global delete operator is invoked
Q30.
The delete operator __________________________

a.

Can be defined for each class

b.

Can’t be defined for each class

c.

Can be defined globally only

d.

Can’t be defined in a program explicitly

Discuss
Answer: (a).Can be defined for each class
Page 3 of 6

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