Object Oriented Programming MCQs

Page No. 69

Which among the following is true for class exceptions?


aOnly base class can give rise to exceptions

✖


bOnly derived class can give rise to exceptions

✖


cEither base class or derived class may produce exceptions

✖


d Both base class and derived class may produce exceptions

✓


View Answer Both base class and derived class may produce exceptions

Which among the following is wrong syntax related to static data members?


aclassName :: staticDataMember;

✖


bdataType className :: memberName =value;

✖


cstatic dataType memberName;

✖


dclassName : dataType -> memberName;

✓


View Answer className : dataType -> memberName;

What will be the output of the following program? class Test { public: Test() { cout << "Test's Constructor is Called " << endl; } }; class Result { static Test a; public: Result() { cout << "Result's Constructor is Called " << endl; } }; void main() { Result b; }


aTest’s Constructor is Called

✖


bResult’s Constructor is Called

✓


c Result’s Constructor Called Test’s Constructor is Called

✖


dTest’s Constructor Called Result’s Constructor is Called

✖


View Answer Result’s Constructor is Called

If object of class are created, then the static data members can be accessed ____________


aUsing dot operator

✖


bUsing arrow operator

✖


cUsing colon

✖


dUsing dot or arrow operator

✓


View Answer Using dot or arrow operator

Whenever any static data member is declared in a class ______________________


aOnly one copy of the data is created

✓


bNew copy for each object is created

✖


cNew memory location is allocated with each object

✖


d Only one object uses the static data

✖


View Answer Only one copy of the data is created

What is the output of the following program? class Test { private: static int x; public: static void fun() { cout << ++x << “ ”; } }; int Test :: x =20; void main() { Test x; x.fun(); x.fun(); }


a20 22

✖


b 20 21

✖


c21 22

✓


d22 23

✖


View Answer 21 22

Which data members among the following are static by default?


aextern

✖


binteger

✖


cconst

✓


dvoid

✖


View Answer const

Which among the following is the correct syntax to access static data member without using member function?


aclassName -> staticDataMember;

✖


bclassName :: staticDataMember;

✓


cclassName : staticDataMember;

✖


dclassName . staticDataMember;

✖


View Answer className :: staticDataMember;

The static data member __________________________


aCan be accessed directly

✖


bCan be accessed with any public class name

✖


cCan be accessed with dot operator

✖


dCan be accessed using class name if not using static member function

✓


View Answer Can be accessed using class name if not using static member function

If static data members have to be used inside a class, those member functions _______________


aMust not be static member functions

✖


bMust not be member functions

✖


cMust be static member functions

✓


dMust not be member function of corresponding class

✖


View Answer Must be static member functions

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