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Welcome to the Overloading MCQs Page

Dive deep into the fascinating world of Overloading with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Overloading, a crucial aspect of Object Oriented Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Overloading, 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 Overloading. 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 Overloading. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Overloading MCQs | Page 3 of 6

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Q21.
Which is the correct syntax for using default arguments with the constructor?

a.

default constructorName(default int x=0)

b.

constructorName(default int x=0)

c.

constructorName(int x=0)

d.

constructorName()

Discuss
Answer: (c).constructorName(int x=0)
Q22.
How many parameters must be passed if only the following prototype is given to a constructor?

Prototype: className(int x, int y, int z=0);

a.

1

b.

2

c.

3

d.

Compile time error

Discuss
Answer: (b).2
Q23.
If the constructors are overloaded by using the default arguments, which problem may arise?

a.

The constructors might have all the same arguments except the default arguments

b.

The constructors might have same return type

c.

The constructors might have same number of arguments

d.

The constructors can’t be overloaded with respect to default arguments

Discuss
Answer: (a).The constructors might have all the same arguments except the default arguments
Q24.
Which among the following is true ?

a.

More than one constructors with all default arguments is allowed

b.

More than one constructors with all default arguments can be defined outside the class

c.

More than one constructors can be used with same argument list

d.

More than one constructors with all default arguments can’t exist in same class

Discuss
Answer: (d).More than one constructors with all default arguments can’t exist in same class
Q25.
Which constructor among the following will be called if a call is made like className(5,’a’);?

a.

className(int x=5,char c=’a’);

b.

int className(int x, char c, char d);

c.

className(int x, char c, int y);

d.

char className(char c,int x);

Discuss
Answer: (a).className(int x=5,char c=’a’);
Q26.
Which constructor definition will produce a compile time error?

a.

className(int x=0);

b.

className(char c);

c.

className(int x=0,char c);

d.

className(char c,int x=0);

Discuss
Answer: (c).className(int x=0,char c);
Q27.
If there is a constructor with all the default arguments and arguments are not passed then _________________

a.

The default values given will not be used

b.

Then all the null values will be used

c.

Then all the default values given will be used

d.

Then compiler will produce an error

Discuss
Answer: (c).Then all the default values given will be used
Q28.
Which is the correct statement for default constructors?

a.

The constructors with all the default arguments

b.

The constructors with all the null and zero values

c.

The constructors which can’t be defined by programmer

d.

The constructors with zero arguments

Discuss
Answer: (d).The constructors with zero arguments
Q29.
Which is a good alternative instead of having one zero argument constructor and one single argument constructor with default argument?

a.

No constructor defined

b.

One default value constructor

c.

Defining the default constructor

d.

Using one constructor with two arguments

Discuss
Answer: (b).One default value constructor
Q30.
What is upcasting?

a.

Casting subtype to supertype

b.

Casting super type to subtype

c.

Casting subtype to super type and vice versa

d.

Casting anytype to any other type

Discuss
Answer: (a).Casting subtype to supertype
Page 3 of 6

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