MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your C++ Programming knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is an arithmetic unary functor? |
| A. | logical_not<T> f; |
| B. | logical_and<T> f; |
| C. | logical_or<T> f; |
| D. | negate<T> f; |
| Answer» E. | |
| 2. |
Which of the following is a logical unary functor? |
| A. | logical_or<T> f; |
| B. | logical_and<T> f; |
| C. | logical_not<T> f; |
| D. | negate<T> f; |
| Answer» D. negate<T> f; | |
| 3. |
How many ways are there to use functors? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 4. |
What are binary functors? |
| A. | Functors that accepts only one parameter |
| B. | Functors that accepts more than one parameters |
| C. | Functors that accepts two parameters |
| D. | Functors that accepts other than a specific type of parameter |
| Answer» D. Functors that accepts other than a specific type of parameter | |
| 5. |
What are unary functors? |
| A. | Functors that accepts only one parameter |
| B. | Functors that accepts two parameters |
| C. | Functors that accepts more than one parameters |
| D. | Functors that accepts other than a specific type of parameter |
| Answer» B. Functors that accepts two parameters | |
| 6. |
Which of the following header file is required to use in-bulit functors of C++? |
| A. | <any> |
| B. | <fucntional> |
| C. | <functor> |
| D. | <function> |
| Answer» C. <functor> | |
| 7. |
Which of te following is a built-in example of functors in C++? |
| A. | mltiplication<T> f(a1, a2); |
| B. | add<T> f(a1, a2); |
| C. | subtract<T> f(a1, a2); |
| D. | plus<T> f(a1, a2); |
| Answer» E. | |
| 8. |
Which of the following is correct about Functors? |
| A. | Functors should not be declared outside the main function |
| B. | Overloaded operator () function is not a member of the class |
| C. | Functors should be declared global |
| D. | Functors have a state |
| Answer» E. | |
| 9. |
What is the correct function prototype of () operator overloading? |
| A. | return_type operator(arguments)(); |
| B. | return_type operator(arguments); |
| C. | return_type operator()(arguments); |
| D. | return_type operator(Class_name)(arguments); |
| Answer» D. return_type operator(Class_name)(arguments); | |
| 10. |
Which of the following operators are overloaded for functors? |
| A. | [] |
| B. | () |
| C. | << |
| D. | >> |
| Answer» C. << | |
| 11. |
What are functors in C++? |
| A. | Objects of a class which are treated as functions |
| B. | Objects that are used to call the function of other classes |
| C. | Functions that are called using pointer objects |
| D. | Functions that are called only once in a program |
| Answer» B. Objects that are used to call the function of other classes | |