C++ Developer - Recursion

The video tutorial covers the basics of functions and recursion in programming. It explains function prototypes, definitions, and the difference between parameters and arguments. The tutorial introduces recursion, highlighting its use in breaking down complex problems. Through examples like the countdown project and sum values function, it demonstrates how recursive functions work, emphasizing the importance of base and recursive cases. A challenge is presented to create a recursive factorial function, illustrating the concept further.

What is a recursive function?

• A function that is called only once

• A function that only uses loops

• A function that never returns a value

• A function that calls itself

In the countdown project, what is the base case for the recursive function?

• When the number is less than zero

• When the number is greater than 10

• When the number is exactly 5

• When the number is equal to 10

What is the purpose of the call stack in recursion?

• To keep track of function calls

• To manage memory allocation

• To store global variables

• To execute loops

What happens when the call stack becomes too full?

• The program ignores additional calls

• The program crashes with a stack overflow

• The program runs faster

• The program automatically clears the stack

In the sum values example, what does the recursive function return when the base case is reached?

• One

• The sum of all numbers

• The original number

• Zero

What is the purpose of the sum values function?

• To subtract numbers from a given number to one

• To add numbers from a given number to one

• To multiply numbers from a given number to one

• To divide numbers from a given number to one

What is the base case for the factorial function in the challenge?

• When the number is zero

• When the number is greater than one

• When the number is negative

• When the number is one

How does the recursive factorial function calculate the factorial of a number?

• By adding the number to its factorial

• By multiplying the number by the factorial of the number minus one

• By dividing the number by its factorial

• By subtracting the number from its factorial

What is the result of 5 factorial using the recursive approach?

• 24

• 120

• 720

• 60

Why is recursion sometimes preferred over iteration?

• It is easier to understand

• It uses less memory

• It simplifies problems with hierarchical structures

• It is always faster