Object Oriented Programming MCQs

Page No. 73

Which symbol should be used to pass the object by reference in C++?


a&

✓


b @

✖


c$

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d$ or &

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View Answer &

The object ________________


aCan be passed by reference

✖


bCan be passed by value

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cCan be passed by reference or value

✓


d Can be passed with reference

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Passing object to a function _______________


aCan be done only in one way

✖


bCan be done in more than one ways

✓


cIs not possible

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dIs not possible in OOP

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Why temporary object is not created in return by reference?


aBecause compiler can’t create temporary objects

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bBecause the temporary object is created within the function

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cBecause return by reference just make the objects points to values memory location

✓


dBecause return by reference just make the object point to null

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If an object is being returned by value then __________________________


aIts member values are made constant

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bIts member values have to be copied individually

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cIts member values are not used

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d Its member values are copied using copy constructor

✓



If an object is passed by reference to a function then it must be returned by reference.


a True

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bFalse

✓


cA & B

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d None of the above

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View Answer False

Can we return an array of objects?


aYes, always

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b Ye, only if objects are having same values

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cNo, because objects contain many other values

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d No, because objects are single entity

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View Answer Yes, always

If object is passed by reference ____________________


aTemporary object is created

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b Temporary object is created inside the function

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cTemporary object is created for few seconds

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dTemporary object is not created

✓



Which error will be produced if a local object is returned by reference outside a function?


a Out of memory error

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bRun time error

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cCompile time error

✓


dNo error

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View Answer Compile time error

How many independent objects can be returned at same time from a function?


a1

✓


b 2

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c3

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d4

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View Answer 1

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