Object Oriented Programming MCQs

Page No. 63

Which objects can call the const functions?


aOnly const objects

✖


bOnly non-const objects

✖


cBoth const and non-const objects

✓


dNeither const not non-const objects

✖


View Answer Both const and non-const objects

Which keyword must be used to declare a member function as a constant member function?


aConstant

✖


bConst

✓


cFunctionConst

✖


dUnchanged

✖


View Answer Const

What are the constant member functions?


aFunctions which doesn’t change value of calling object

✓


bFunctions which doesn’t change value of any object inside definition

✖


cFunctions which doesn’t allow modification of any object of class

✖


dFunctions which doesn’t allow modification of argument objects

✖


View Answer Functions which doesn’t change value of calling object

If a function in java is declared private then it __________________


aCan’t access the standard output

✖


bCan access the standard output

✓


cCan’t access any output stream

✖


dCan access only the output streams

✖


View Answer Can access the standard output

Can main() function be made private?


aYes, always

✖


bYes, if program doesn’t contain any classes

✖


cNo, because main function is user defined

✖


dNo, never

✓


View Answer No, never

Which error will be produced if private members are accessed?


aCan’t access private message

✓


bCode unreachable

✖


cCore dumped

✖


dBad code

✖


View Answer Can’t access private message

A private function of a derived class can be accessed by the parent class.


aTrue

✖


bFalse

✓


cA & B

✖


d None of these

✖


View Answer False

If private members are to be called outside the class, which is a good alternative?


aCall a public member function which calls private function

✓


bCall a private member function which calls private function

✖


cCall a protected member function which calls private function

✖


dNot possible

✖


View Answer Call a public member function which calls private function

Which function among the following can’t be accessed outside the class in java in same package?


apublic void show( )

✖


bvoid show( )

✖


cprotected show( )

✓


dstatic void show( )

✖


View Answer protected show( )

Private member functions ____________


aCan’t be called from enclosing class

✓


bCan be accessed from enclosing class

✖


cCan be accessed only if nested class is private

✖


dCan be accessed only if nested class is public

✖


View Answer Can’t be called from enclosing class

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