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) -> Which of the following operators is used to access members of a class in C++? 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() Which of the following operators is used to access members of a class in C++? 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. Which of the following statements about the return statement in C++ 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 Which of the following statements about the return statement in C++ 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 In C++, the operator ___ cannot be overloaded. (Choose one: ::, ++, +, -) ::

Question 4 In C++, the operator ___ cannot be overloaded. (Choose one: ::, ++, +, -)

Question 4 In C++, the operator ___ cannot be overloaded. (Choose one: ::, ++, +, -) ::

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

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