Object Oriented Programming MCQs with Answers
Practice important Object Oriented Programming MCQs with answers and explanations.
Chapter: 35
Q541:
In the Complex class example, why does Complex< float > fc(0, 0); Complex< double > dc = fc; result in an error?
A. The constructor is not defined for double type
B. There is no copy constructor defined
C. The copy constructor only works for the same template type
D. The class is not properly templated
Correct Answer:
C
Chapter: 35
Q542:
What does the template<typename T> class Complex represent?
A. A class template for different data types
B. A single class for one data type
C. A function template for complex operations
D. A type of class specialization
Correct Answer:
A
Chapter: 35
Q543:
How can you allow a Complex class to copy from a different data type?
A. By using a template constructor
B. By defining a non-templated constructor
C. By using explicit specialization
D. By using a copy constructor with two template parameters
Correct Answer:
D
Chapter: 35
Q544:
What is the result of the following statement: Complex< float > fc(0, 0); Complex< double > dc = fc; when using a template constructor?
A. It will compile successfully
B. It will result in a compilation error
C. It will cause runtime error
D. It will not compile but give a warning
Correct Answer:
B
Chapter: 35
Q545:
Fill in the blank: A template function that is used to handle different types of containers must support the _______ and _______ operators.
A. Increment, Comparison
B. Addition, Subtraction
C. Multiplication, Division
D. Increment, Dereference
Correct Answer:
D
Chapter: 35
Q546:
What type of copy constructor is used to handle different data types in the Complex class?
A. A non-templated copy constructor
B. A templated copy constructor with two parameters
C. A default copy constructor
D. A copy constructor with static parameters
Correct Answer:
B
Chapter: 35
Q547:
What is the main advantage of using explicit template functions in class templates?
A. They reduce code bloat by generating only required instances
B. They make the code more readable
C. They simplify memory management
D. They increase the execution speed
Correct Answer:
A
Chapter: 35
Q548:
How does the Vector<char*> class handle memory management differently from Vector<int>?
A. It uses shallow copy and needs explicit memory management
B. It uses deep copy automatically
C. It does not handle memory management
D. It uses static memory allocation
Correct Answer:
A
Chapter: 35
Q549:
What does the insert function do in the specialized Vector<char*> class?
A. It replaces existing values at a specific index with new values
B. It adds new values at the end of the vector
C. It removes values from the vector
D. It sorts the values in the vector
Correct Answer:
A
Chapter: 35
Q550:
In the template Vector<char*>, what is the effect of shallow copy?
A. It copies pointers but not the actual data, leading to potential issues
B. It copies both pointers and data correctly
C. It removes pointers and retains only data
D. It changes the data type of pointers
Correct Answer:
A
Chapter: 35
Q551:
Fill in the blank: The Vector<char*> specialization handles _______ by allocating and deallocating memory for character arrays.
A. Shallow copy
B. Deep copy
C. Memory leak
D. Static allocation
Correct Answer:
B
Chapter: 35
Q552:
What is the main issue with using Vector<char*> without specialization?
A. It leads to shallow copying issues
B. It results in compilation errors
C. It causes memory overflow
D. It produces incorrect data types
Correct Answer:
A
Chapter: 36
Q553:
In C++ templates, what does partial specialization involve?
A. Changing the number of template parameters
B. Changing the type of all template parameters
C. Providing more specific types for some template parameters
D. Using a single template parameter
Correct Answer:
C
Chapter: 36
Q554:
Which of the following is an example of complete specialization?
A. template< class T > class Vector { };
B. template< class T > class Vector< T* > { };
C. template< class T, class U, class V > class A {};
D. template<> class Vector< char* > { };
Correct Answer:
D
Chapter: 36
Q555:
What does the `insert` method in the `ComplexSet` class template do?
A. It inserts a `Complex` instance into a `ComplexSet` object
B. It removes a `Complex` instance from a `ComplexSet` object
C. It updates a `Complex` instance in a `ComplexSet` object
D. It searches for a `Complex` instance in a `ComplexSet` object
Correct Answer:
A
Chapter: 36
Q556:
Which type of parameters are not type parameters in templates?
A. Template parameters
B. Non-type parameters
C. Type parameters
D. Template arguments
Correct Answer:
B
Chapter: 36
Q557:
What will the following code result in? `template< typename T > bool isEqual( T x, T y ) { return ( x == y ); }`
A. Comparing two objects of the same type
B. Comparing two pointers of the same type
C. Comparing two different types
D. Comparing two const char* strings
Correct Answer:
A
Chapter: 36
Q558:
When using the `Complex` class template, what will happen if `Complex<float>` is assigned to `Complex<double>` without explicit specialization?
A. It will work without any issues
B. It will result in a compilation error
C. It will automatically convert the types
D. It will create a new `Complex<double>` instance without errors
Correct Answer:
B
Chapter: 36
Q559:
What does the member template `insert` in the `ComplexSet` class do?
A. It adds a `Complex` object of any type to the set
B. It removes a `Complex` object from the set
C. It updates a `Complex` object in the set
D. It retrieves a `Complex` object from the set
Correct Answer:
A
Chapter: 36
Q560:
The `Array` class template can use non-type parameters to specify ____.
A. The type of elements
B. The size of the array
C. The constructor parameters
D. The array's default value
Correct Answer:
B