Overloading works in tandem with ______, a feature of OOP, that allows entities to take on more than one form.
- Abstraction
- Encapsulation
- Inheritance
- Polymorphism
Overloading works in tandem with Polymorphism, a feature of Object-Oriented Programming (OOP), that allows entities to take on more than one form. Polymorphism enables the selection of the appropriate function or behavior at runtime, enhancing code flexibility and reusability. Function overloading is an example of compile-time polymorphism.
Kimberly is debugging a program where a loop intended to run 10 times is running indefinitely. Which part of the loop should she particularly inspect for possible logical errors?
- Loop body
- Loop condition
- Loop increment
- Loop initialization
Kimberly should inspect the loop condition. If the loop condition is not properly defined or is always true, the loop will run indefinitely. She should ensure that the condition is correctly set to run the loop the intended number of times (in this case, 10).
Max wants to compare two integers to see if they are not equal. Which operator will allow him to do this?
- !=
- <=
- ==
- >=
Max can use the '!=' (not equal) operator to compare two integers and check if they are not equal. The '==' operator is used to check for equality, while the other operators are used for different types of comparisons.
David is noticing that a certain piece of computation inside his loop doesn't need to be executed every iteration. What can he use to skip that computation for specific iterations?
- continue statement
- for loop
- if statement
- switch statement
David can use the continue statement to skip a certain piece of computation for specific iterations within his loop. When continue is encountered, it causes the program to skip the remaining code within the current iteration and move on to the next iteration of the loop. This can improve the efficiency of the loop when certain conditions don't require the computation to be executed.
The ______ operator is overloaded to perform array subscripting.
- ()
- ->
- =
- []
The [] operator is overloaded to perform array subscripting in C++. This allows you to access individual elements of an array or a user-defined data structure as if it were an array. Overloading [] enables custom behavior when indexing objects.
How does the continue statement affect the execution of a loop?
- It pauses the loop temporarily.
- It restarts the loop from the beginning.
- It skips the current iteration and continues with the next iteration.
- It terminates the loop immediately.
The continue statement in a loop skips the current iteration and continues with the next iteration. It does not terminate the loop or restart it. This is useful when you want to skip certain iterations based on a condition but continue the loop.
Default arguments should be avoided in virtual functions as they don’t behave as most people expect and can lead to ________.
- Code Reuse
- Improved Debugging
- Increased Performance
- Runtime Errors
Default arguments in virtual functions can lead to runtime errors because the default argument values are determined at compile-time, not runtime. This can result in unexpected behavior when overriding virtual functions in derived classes.
Anna wants to write a program that counts the number of students in a school. Which data type should she use for the count?
- bool
- float
- int
- string
Anna should use the 'int' (integer) data type. Integers are used for storing whole numbers, which is ideal for counting discrete items like the number of students. It provides efficient memory usage and supports mathematical operations.
Is it possible to specify default arguments only for some middle arguments in a function, skipping the last ones?
- Default arguments can only be specified for the first arguments.
- Default arguments can only be specified for the last arguments.
- No, default arguments must be specified for all or none of the function's arguments.
- Yes, default arguments can be specified for middle arguments.
In C++, you can specify default arguments for some middle arguments while skipping the last ones. However, all arguments to the right of a default argument must also have default values.
In what scenarios should the use of inline functions be avoided?
- When the function contains loops.
- When the function is complex and large.
- When the function is frequently called with a small amount of code.
- When the function is used in a performance-critical section of code.
Inline functions should be avoided in scenarios where the function is complex and large. The purpose of inline functions is to reduce function call overhead, but in the case of large or complex functions, inlining can lead to code bloat, impacting performance and code maintainability. In such cases, it's better to use regular functions.