Constructors and Destructors Mcqs
Our collections of Multiple choice questions and answers focuses on study of Constructors and Destructors in OOP. These questions are chosen from a collection of most authoritative and best reference books on OOP. Our aim is to prepare an individual for competitive exams like NTS, Web Developer | IOS Developer | Game Developer | Software House interviews and jobs, University and College entrance exams and various tests and job interviews. One should practice our Mcqs to assimilate Constructors and Destructors in OOP comprehensively.
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2.
Which among the following is not a necessary condition for constructors?
3.
In which access should a constructor be defined, so that object of the class can be created in any function?
4.
How many types of constructors are available for use in general (with respect to parameters)?
5.
If a programmer defines a class and defines a default value parameterized constructor inside it.
He has not defined any default constructor. And then he try to create the object without passing arguments, which among the following will be correct?
He has not defined any default constructor. And then he try to create the object without passing arguments, which among the following will be correct?
6.
If class C inherits class B. And B has inherited class A. Then while creating the object of class C, what will be the sequence of constructors getting called?
7.
In multiple inheritance, if class C inherits two classes A and B as follows, which class constructor will be called first:
class A{ };
class B{ };
class C: public A, public B{ };
class A{ };
class B{ };
class C: public A, public B{ };
8.
Which among the following is true for copy constructor?
9.
If the object is passed by value to a copy constructor:
10.
Which object will be created first?
class student
{
int marks;
};
student s1, s2, s3;
class student
{
int marks;
};
student s1, s2, s3;
11.
Which among the following helps to create a temporary instance?
12.
Which among the following is correct for the class defined below?
class student
{
int marks;
public: student(){}
student(int x)
{
marks=x;
}
};
main()
{
student s1(100);
student s2();
student s3=100;
return 0;
class student
{
int marks;
public: student(){}
student(int x)
{
marks=x;
}
};
main()
{
student s1(100);
student s2();
student s3=100;
return 0;
13.
For constructor overloading, each constructor must differ in ___________ and __________
14.
How many types of constructors are available, in general, in any language?
15.
Choose the correct option for the following code.
class student
{
int marks;
}
student s1;
student s2=2;
class student
{
int marks;
}
student s1;
student s2=2;