Object Oriented Programming MCQs

Page No. 86

What is the new operator?


a Allocates memory for an object or array

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bAllocates memory for an object or array and returns a particular pointer

✓


cUsed as return type when an object is created

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d Used to declare any new thing in a program

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The delete operator __________________________


aCan be defined for each class

✓


b Can’t be defined for each class

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cCan be defined globally only

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dCan’t be defined in a program explicitly

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. For objects that are not of class type ______________


a Global delete operator is invoked

✓


b Local delete operator is invoked

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cGlobal user defined function is invoked

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dLocal function to delete object is called

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The delete operator __________________


aInvokes function operator delete

✓


bInvokes function defined by user to delete

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cInvokes function defined in global scope to delete object

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dDoesn’t invoke any function

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Which cases among the following produces the undefined result?


a delete [] on an independent object

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bdelete on an object array

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cdelete [] on an object and delete on object array

✓


dUndefined result is never produced

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. Which is the correct syntax to delete an array of objects?


adelete [] objectName;

✓


bdelete * objectName;

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cobjectName[] delete;

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ddelete objectName[];

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View Answer delete [] objectName;

Which is the correct syntax to delete a single object?


adelete *objectName;

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bobjectName delete;

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c delete objectName;

✓


dobjectName *delete;

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View Answer delete objectName;

How many variants of delete operator are available?


aOnly 1

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bOnly 2

✓


cOnly 3

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dOnly 4

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View Answer Only 2

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

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b Its value is defined as void

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cIts value is defined as 0

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dIts value is undefined

✓



When delete operator is used ___________________ (If object has a destructor)


aObject destructor is called after deallocation

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bObject destructor is called before deallocation

✓


cbject destructor is not used

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dObject destructor can be called anytime during destruction

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