Object Oriented Programming in C++ MCQ question and answer with solution

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Out of the following, which is not a member of the class?

A) Static function B) Friend function C) Constant function D) Virtual function

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

What is the correct syntax of declaring array of pointers of integers of size 10 in C++?

A) int arr = new int[10]; B) int **arr = new int*[10]; C) int *arr = new int[10]; D) int *arr = new int*[10];

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Answer & Solution

Answer: Option B

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Which of the following explains Polymorphism?

int func(int, int);
float func1(float, float);

int func(int);
int func(int);

int func(float);
float func(int, int, char);

int func();
int new_func();

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Answer & Solution

Answer: Option C

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Which of the following feature of OOPs is not used in the following C++ code?

class A
{
    int i;
    public:
    void print(){cout<<"hello"<<i;}
}
 
class B: public A
{
    int j;
    public:
    void assign(int a){j = a;}
}

A) Abstraction B) Encapsulation C) Inheritance D) Polymorphism

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Answer & Solution

Answer: Option D

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Why references are different from pointers?

A) A reference cannot be made null B) A reference cannot be changed once initialized C) No extra operator is needed for dereferencing of a reference D) All of the mentioned

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Answer & Solution

Answer: Option D

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Which of the following explains the overloading of functions?

A) Virtual polymorphism B) Transient polymorphism C) Ad-hoc polymorphism D) Pseudo polymorphism

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Answer & Solution

Answer: Option C

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What is the difference between delete and delete[] in C++?

A) delete is used to delete normal objects whereas delete[] is used to pointer objects B) delete is a keyword whereas delete[] is an identifier C) delete is used to delete single object whereas delete[] is used to multiple(array/pointer of) objects D) delete is syntactically correct but delete[] is wrong and hence will give an error if used in any case

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Answer & Solution

Answer: Option C

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Which of the following is correct?

A) Base class pointer object cannot point to a derived class object B) Derived class pointer object cannot point to a base class object C) A derived class cannot have pointer objects D) A base class cannot have pointer objects

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Answer & Solution

Answer: Option B

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What is the other name used for functions inside a class?

A) Member variables B) Member functions C) Class functions D) Class variables

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Answer & Solution

Answer: Option B

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Which of the following is an abstract data type?

A) int B) float C) class D) string

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Answer & Solution

Answer: Option C

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Object Oriented Programming in C++ MCQ question and answer with solution | C++ Programimg MCQs