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- Question
What will happen when introduce the interface of classes in a run-time polymorphic hierarchy?
Options- A. Separation of interface from implementation
- B. Merging of interface from implementation
- C. Separation of interface from debugging
- D. None of the mentioned
- Correct Answer
- Separation of interface from implementation
- 1. Where does the standard exception classes are grouped?
Options- A. namespace std
- B. error
- C. catch
- D. none of these Discuss
- 2. Why is it expensive to use objects for exception?
Options- A. Exception object is created only if an error actually happens
- B. Because of execution time
- C. Memory space involved in creating an exception object
- D. None of the mentioned Discuss
- 3. What are the operators available in dynamic memory allocation?
Options- A. new
- B. delete
- C. compare
- D. both a & b Discuss
- 4. Where does the exception are handled?
Options- A. inside the program
- B. outside the regular code
- C. both a & b
- D. none of these Discuss
- 5. Where does the exceptions are used?
Options- A. Exceptions are used when postconditions of a function cannot be satisfied.
- B. Exceptions are used when postconditions of a function can be satisfied.
- C. To preserve the program
- D. none of these Discuss
- 6. What of the following describes protected access specifier?
Options- A. The variable is visible only outside inside the block
- B. The variable is visible everywhere
- C. The variable is visible to its block and to it?s derived class
- D. None of these Discuss
- 7. What is the Run-Time Type Information?
Options- A. Information about an object?s datatype at runtime
- B. Information about the variables
- C. Information about the given block
- D. None of these Discuss
- 8. Which is best for coding the standard libary for c++?
Options- A. no trailing underscores on names
- B. complex objects are returned by value
- C. have a member-swap()
- D. All of the mentioned Discuss
- 9. How the member functions in the container can be accessed?
Options- A. Iterator
- B. Indirect
- C. Both a & b
- D. None of these Discuss
- 10. What does the sequence adaptor provide?
Options- A. Insertion
- B. Deletion
- C. Interface to sequence container
- D. None of thse Discuss
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Correct Answer: namespace std
Explanation:
:As these are standard exceptions, they need to be defined in the standard block, So it is defined under namespace std.
Correct Answer: Exception object is created only if an error actually happens
Explanation:
If an error occurs in program, then only exception object is created otherwise, It will not be created. So it?s expensive to use in the program.
Correct Answer: both a & b
Explanation:
new and delete operators are mainly used to allocate and deallocate
during runtime.
Correct Answer: outside the regular code
Correct Answer: Exceptions are used when postconditions of a function can be satisfied.
Correct Answer: The variable is visible to its block and to it?s derived class
Correct Answer: Information about an object?s datatype at runtime
Explanation:
With the help of RTTI, We can get the information about the data type at the runtime.
Correct Answer: All of the mentioned
Correct Answer: Iterator
Explanation:
The container manages the storage space for its elements and provides member functions to access them, either directly or through iterators which reference objects with similar properties to pointers.
Correct Answer: Interface to sequence container
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