Object Oriented Programming MCQs

Page No. 4

Object can’t be used with pointers because they belong to user defined class, and compiler can’t decide the type of data may be used inside the class.


aTrue


bFalse


cA & B


d None of these


View Answer False

Which among the following is correct?


aclass student{ }s1,s2; s1.student()=s2.student();


bclass student{ }s1; class topper{ }t1; s1=t1;


cclass student{ }s1,s2; s1=s2;


dclass student{ }s1; class topper{ }t1; s1.student()=s2.topper();



When an object is returned___________


aA temporary object is created to return the value


bThe same object used in function is used to return the value


cThe Object can be returned without creation of temporary object


dObject are returned implicitly, we can’t say how it happens inside program



Object declared in main() function _____________


aCan be used by any other function


bCan be used by main() function of any other program


cCan’t be used by any other function


dCan be accessed using scope resolution operator



Which among the following is wrong?


aclass student{ }; student s;


babstract class student{ }; student s;


cabstract class student{ }s[50000000];


dabstract class student{ }; class toppers: public student{ }; topper t;



If a local class is defined in a function, which of the following is true for an object of that class?


aObject is accessible outside the function


bObject can be declared inside any other function


cObject can be used to call other class members


dObject can be used/accessed/declared locally in that function



How members of an object are accessed?


aUsing dot operator/period symbol


bUsing scope resolution operator


cUsing member names directly


dUsing pointer only



Functions can’t return objects.


aTrue


b False


cA & B


d None of these


View Answer False

What is size of the object of following class (64 bit system)?<br><br> class student { int rollno; char name[20]; static int studentno; };


a20


b22


c24


d28


View Answer 24

The object can’t be __________


aPassed by reference


bPassed by value


cPassed by copy


dPassed as function


View Answer Passed as function

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