Object Oriented Programming MCQs

Page No. 61

Which language doesn’t support the method overriding implicitly?


aC++

✖


bC#

✓


cJava

✖


dSmallTalk

✖


View Answer C#

The functions to be overridden _____________


a Must be private in base class

✖


bMust not be private base class

✓


cMust be private in both derived and base class

✖


dMust not be private in both derived and base class

✖


View Answer Must not be private base class

How to access the overridden method of base class from the derived class?


aUsing arrow operator

✖


bUsing dot operator

✖


cUsing scope resolution operator

✓


dCan’t be accessed once overridden

✖


View Answer Using scope resolution operator

Which among function will be overridden from the function defined in derived class below:


ashow( )

✓


bprint( )

✖


cshow( ) and print( )

✖


dCompile time error

✖


View Answer show( )

Exactly same declaration in base and derived class includes______________


aOnly same name

✖


bOnly same return type and name

✖


cOnly same return type and argument list

✖


dAll the same return type, name and parameter list

✓


View Answer All the same return type, name and parameter list

Which is the correct condition for function overriding?


aThe declaration must not be same in base and derived class

✖


bThe declaration must be exactly the same in base and derived class

✓


cThe declaration should have at least 1 same argument in declaration of base and derived class

✖


dThe declaration should have at least 1 different argument in declaration of base and derived class

✖


View Answer The declaration must be exactly the same in base and derived class

Which among the following is true?


aInheritance must not be using when overriding is used

✖


bOverriding can be implemented without using inheritance

✖


cInheritance must be done, to use overriding are overridden

✓


dInheritance is mandatory only if more than one functions

✖


View Answer Inheritance must be done, to use overriding are overridden

Which among the following best describes member function overriding?


aMember functions having same name in base and derived classes

✓


bMember functions having same name in base class only

✖


cMember functions having same name in derived class only

✖


dMember functions having same name and different signature inside main function

✖


View Answer Member functions having same name in base and derived classes

Use of const member function in a program _________________________


aIs mandatory, always

✖


bIs optional, always

✓


cIs mandatory, if objects are used

✖


dIs optional, if const objects are used

✖


View Answer Is optional, always

Which among the following is recommended for const functions?


aConst function use should be reduced in a program

✖


bConst function use should be more in a program

✓


cConst function use should not matter in a program

✖


dConst function use should be able to modify the values

✖


View Answer Const function use should be more in a program

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