Object Oriented Programming using C++ / C Plus Plus QUIZ

MCQ
True False
Questions
Fill in the Blanks
Assertion
Reasoning
01
02
04
03
Output Finding
05

Which of the following operators is used to access
members of a class in C++?
Question 1
A)->
B).
C) ::
D) [ ]

A) ->
Question 1

1. int main()
2. void main()
3. None
4. Both 1 and 2
Which of the following is the correct
implementation / use of main() function?
Question 2

1. int main()
Question 2

1. The program has encountered an
error.
2. The program has executed
successfully.
3. It has no specific meaning.
4. It causes the program to
terminate immediately.
What does return 0; signify in the main function?
Question 3

The program has executed successfully.
What does return 0; signify in the main function?
Question 3

1. The main function can only create
instances of classes.
2. The main function cannot use class
methods.
3. The main function can access static
members of classes directly.
4. The main function must be defined
within a class.
Which of the following statements is true
regarding the
use of the main function in object-oriented
programming?
Question 4

The main function can access static
members of classes directly
Which of the following statements is true
regarding the
use of the main function in object-oriented
programming?
Question 4

A. The function continues to execute any
remaining statements after the return.
B. The function exits immediately, and control
is passed back to the calling function.
C. The function returns control to the main
function.
D. The function throws an exception.
In C++, what happens when a return statement is encountered
in a function?
Question 5

The function exits immediately, and
control is passed back to the calling
function.
In C++, what happens when a return statement is encountered
in a function?
Question 5

A. The return statement can be used to return
a value from a function.
B. A void function can have a return statement
without any value.
C. If a function returns void, it cannot have a
return statement.
D. When a return statement is executed, the
function terminates immediately.
Which of the following statements about the return statement in C++
is false?
Question 6

If a function returns void, it cannot
have a return statement.
is false?
Question 6

A) Only the constructor
B) Only the destructor
C) Both constructor and destructor
D) Copy constructor and assignment
operator
If a class has dynamically allocated memory, which of the following
should be implemented?
Question 6

Copy constructor and
assignment operator
is false?
Question 6

A) All statements are Valid.
B) A derived class can override the constructor
of a virtually inherited class.
Which of the following statements is NOT valid in the context of virtual
inheritance in C++?
Question 7
C) A virtually inherited base class's constructor
is called only once, regardless of how many
derived classes inherit it.
D) In virtual inheritance, the most derived class
is responsible for initializing the virtually
inherited base class.

A derived class can override the
constructor of a virtually inherited
class.
Which of the following statements is NOT valid in the context of virtual
inheritance in C++?
Question 7

Question 1
Friend functions can be inherited by derived
classes.
TRUE FALSE

Question 2
The scope of a variable declared inside a
function in C++ is Class scope.
TRUE FALSE

Question 3
The size of int data type is always 4 bytes,
irrespective of the system architecture.
TRUE FALSE

Question 1
In a class, a static member function can only access ______ data members
of the class, because it does not have access to the ______ pointer.

Question 1
In a class, a static member function can only access ______ data members
of the class, because it does not have access to the ______ pointer.
1. static 2. this

Question 2
To call a static member function multiply from a class named
MathOperations, you can write MathOperations::multiply(4, 5);.
This syntax is possible because multiply is associated with the ____ itself,
not with any specific ____.

Question 2
To call a static member function multiply from a class named
MathOperations, you can write MathOperations::multiply(4, 5);.
This syntax is possible because multiply is associated with the ____ itself,
not with any specific ____.
1. Class 2. Object

Question 3
In C++, the operator ___ cannot be overloaded. (Choose one: ::, ++, +, -)

Question 3
::

Question 4

Question 4
::

Question 5
When overloading an operator as a member function, the left-hand operand
is always __________.

Question 5
When overloading an operator as a member function, the left-hand operand
is always __________.
this

Static member functions cannot
be
virtual.
Static member functions are
associated with the class, not
with
specific instances of the class.
ASSERTION REASON
A false, R true
A true, R false Both False
Both True
Question 1

Destructors can have return
types in
C++.
Destructors must return void
because they are automatically
called by the system and are
not
meant to return values.
ASSERTION REASON
Both True A false, R true
A true, R false Both False
Question 2

55
int x = 5;
x = x+++++x;
Find the output by
analyzing the code.
Question 1

56
int x = 5;
x = x+++++x;
Find the output by
analyzing the code.
Answer:
Undefined behavior
Question 1

57
Find the output by
analyzing the code.
class Test {
public:
int x;
Test(int value) : x(value) {
cout << "Constructor called for x = " << x << endl;
}
~Test() {
cout << "Destructor called for x = " << x << endl;
}
};
int main() {
Test t1(10);
{
Test t2(20);
}
cout << "End of main" << endl;
return 0;
}
Question 2

58
Find the output by
analyzing the code.
class Test {
public:
int x;
Test(int value) : x(value) {
cout << "Constructor called for x = " << x << endl;
}
~Test() {
cout << "Destructor called for x = " << x << endl;
}
};
int main() {
Test t1(10);
{
Test t2(20);
}
cout << "End of main" << endl;
return 0;
}
Ans:
Constructor called for x = 10
Constructor called for x = 20
Destructor called for x = 20
End of main
Destructor called for x = 10
Question 2

59
Find the output by
analyzing the code.
class MyClass {
int* ptr;
public:
MyClass(int size) {
ptr = new int[size]; // Dynamically allocate memory
cout << "Memory allocated for " << size << " integers." << endl;
}
~MyClass() {
delete[] ptr; // Deallocate memory
cout << "Memory deallocated." << endl;
}
};
int main() {
MyClass obj(5); // Dynamically allocate memory for 5 integers
return 0;
}
Question 3

60
Find the output by
analyzing the code.
class MyClass {
int* ptr;
public:
MyClass(int size) {
ptr = new int[size]; // Dynamically allocate memory
cout << "Memory allocated for " << size << " integers." << endl;
}
~MyClass() {
delete[] ptr; // Deallocate memory
cout << "Memory deallocated." << endl;
}
};
int main() {
MyClass obj(5); // Dynamically allocate memory for 5 integers
return 0;
}
Answer:
The output will be:
Memory allocated for 5 integers.
Memory deallocated.
Question 3

61
Find the output by
analyzing the code.
class Complex {
public:
int real, imag;
Complex(int r, int i) : real(r), imag(i) {}
Complex operator*(const Complex& c) {
return Complex(real * c.real - imag * c.imag, real * c.imag +
imag * c.real);
}
void display() { cout << real << "+" << imag << "i "; }
};
int main() {
Complex c1(2, 3), c2(4, 5);
Complex c3 = c1 * c2;
c3.display();
return 0;
}
Question 4

62
Find the output by
analyzing the code.
class Complex {
public:
int real, imag;
Complex(int r, int i) : real(r), imag(i) {}
Complex operator*(const Complex& c) {
return Complex(real * c.real - imag * c.imag, real * c.imag +
imag * c.real);
}
void display() { cout << real << "+" << imag << "i "; }
};
int main() {
Complex c1(2, 3), c2(4, 5);
Complex c3 = c1 * c2;
c3.display();
return 0;
}
Answer:
-7+22i
Question 4

Object Oriented Programming using C++ / C Plus Plus QUIZ

More Related Content

Similar to Object Oriented Programming using C++ / C Plus Plus QUIZ (20)

More from RAKSHITDOGRA1 (7)

Recently uploaded (20)

Object Oriented Programming using C++ / C Plus Plus QUIZ