Introduction to Programming MCQs with Answers
Practice important Introduction to Programming MCQs with answers and explanations.
Chapter: 32
Q541:
Which operator is used to compare two Date objects to see if one is greater than the other?
A. Date operator + (Date)
B. Date operator > (Date)
C. Date operator == (Date)
D. Date operator - (Date)
Correct Answer:
B
Chapter: 32
Q542:
What is a key difference between pre-increment (++i) and post-increment (i++) operators in general?
A. Pre-increment changes the value after usage
B. Post-increment changes the value before usage
C. Pre-increment changes the value before usage
D. Post-increment changes the value after usage
Correct Answer:
C
Chapter: 32
Q543:
How would you handle the case when the left operand of the + operator is an integer and the right operand is a Date object?
A. Implement a member function for +
B. Implement a non-member friend function
C. Use a macro for addition
D. Use a global function
Correct Answer:
B
Chapter: 32
Q544:
Why is the daysOfMonth function used in the implementation of the ++ operator for the Date class?
A. To determine if the current month has 30 days
B. To find the number of days in the current month
C. To calculate the number of days remaining in the year
D. To check if the month is February
Correct Answer:
B
Chapter: 32
Q545:
Which of the following is a true statement about the Date class operator overloads?
A. Operator overloads must always return a Date object
B. Overloaded operators can return different types
C. Only arithmetic operators can be overloaded
D. All operators must be member functions
Correct Answer:
B
Chapter: 33
Q546:
What is the purpose of operator overloading in object-oriented programming?
A. To make code look more complex
B. To simplify and clean code
C. To increase code execution speed
D. To reduce the need for classes
Correct Answer:
B
Chapter: 33
Q547:
What does the default assignment operator in C++ perform?
A. Shallow copy
B. Deep copy
C. Error checking
D. None of the above
Correct Answer:
A
Chapter: 33
Q548:
What is a key issue when using the default assignment operator with objects that contain dynamic memory?
A. It performs a deep copy
B. It performs a shallow copy
C. It can cause memory leaks
D. It handles memory allocation errors
Correct Answer:
C
Chapter: 33
Q549:
In the String class example, what does the assignment operator need to do before copying the string?
A. Allocate new memory for buf
B. Print the current string
C. Check the length of the string
D. Delete the existing buffer
Correct Answer:
A
Chapter: 33
Q550:
How is self-assignment handled in the String class assignment operator?
A. By ignoring the assignment
B. By deleting the buffer twice
C. By copying the buffer
D. By checking if the object is the same
Correct Answer:
D
Chapter: 33
Q551:
Which keyword is used to refer to the calling object inside a member function?
A. self
B. this
C. current
D. object
Correct Answer:
B
Chapter: 33
Q552:
What does the this pointer refer to?
A. The member variable of the class
B. The address of the calling object
C. The address of the member function
D. The return value of the function
Correct Answer:
B
Chapter: 33
Q553:
What is the correct way to ensure that an assignment operator supports chained assignments?
A. Use a return type of void
B. Use a return type of String
C. Use a return type of int
D. Return a reference to the calling object
Correct Answer:
B
Chapter: 33
Q554:
How should an assignment operator be modified to handle self-assignment safely?
A. By copying the memory to a new location
B. By adding a check for self-assignment
C. By using a different constructor
D. By using a different destructor
Correct Answer:
B
Chapter: 33
Q555:
What is the benefit of returning *this in the assignment operator?
A. It allows the assignment to be chained
B. It optimizes memory usage
C. It reduces the execution time
D. It makes the code more readable
Correct Answer:
A
Chapter: 34
Q556:
What is the default behavior when declaring an array of objects without explicit initialization?
A. All objects are initialized with the parameterized constructor.
B. All objects are initialized with the default constructor.
C. Only the first object is initialized; others are uninitialized.
D. No constructor is called for any objects.
Correct Answer:
B
Chapter: 34
Q557:
In the declaration Date myDate[10] = { Date(09, 03, 1970), Date(08, 23, 1974) };, which constructor is called for myDate[2] to myDate[9]?
A. Parameterized constructor with three int parameters.
B. Parameterless constructor.
C. A copy constructor is called.
D. A destructor is called.
Correct Answer:
B
Chapter: 34
Q558:
When using dynamic arrays of objects, which operator is used to allocate memory?
A. delete
B. calloc
C. malloc
D. new
Correct Answer:
D
Chapter: 34
Q559:
Which of the following is true about overloading new and delete operators?
A. They only change the deallocation part of memory management.
B. They only change the allocation part of memory management.
C. They change both allocation and deallocation parts of memory management.
D. They cannot alter the sequence of constructor and destructor calls.
Correct Answer:
C
Chapter: 34
Q560:
What is the purpose of overloading the [] operator in a class?
A. To check the validity of the index when accessing array elements.
B. To change the default constructor behavior.
C. To provide a new memory allocation strategy.
D. To handle dynamic memory allocation differently.
Correct Answer:
A