Understanding the Iterative Fibonacci Function

The video tutorial explains an iterative Fibonacci function, starting with an introduction to its purpose and setup. It then delves into the loop execution, providing a detailed step-by-step explanation of how the Fibonacci sequence is built iteratively. The tutorial concludes by summarizing the logic behind the function and how it constructs the sequence by adding the last two terms repeatedly.

What is the goal of the Fibonacci function discussed in the video?

• To determine the largest Fibonacci number less than a given value.

• To calculate the fifth term in the Fibonacci sequence starting from the 0th term.

• To find the average of the first five Fibonacci numbers.

• To find the sum of all Fibonacci numbers up to a given term.

What are the initial elements of the 'terms' list in the Fibonacci function?

• 2 and 3

• 1 and 3

• 0 and 1

• 1 and 2

Why is the loop variable 'i' initialized to 2 in the Fibonacci function?

• To skip the first two terms.

• Because the first two terms are already defined.

• To ensure the loop runs twice.

• To start the sequence from the third term.

What condition is used to continue the loop in the Fibonacci function?

• i is less than or equal to n

• i is equal to n

• i is not equal to n

• i is greater than n

How is the new term in the Fibonacci sequence calculated in each iteration?

• By dividing the last term by the second to last term.

• By adding the last two terms.

• By subtracting the last term from the second to last term.

• By multiplying the last two terms.

What happens to the loop variable 'i' after each iteration?

• It is decreased by 1.

• It is reset to 0.

• It remains the same.

• It is increased by 1.

What is the significance of the condition 'i is less than or equal to n' in the loop?

• It stops the loop immediately.

• It limits the loop to run exactly n times.

• It ensures the loop runs indefinitely.

• It allows the loop to run until i exceeds n.

What is the final step after the loop completes in the Fibonacci function?

• Return the sum of all terms.

• Reset the terms list.

• Return the nth term in the terms list.

• Print all terms in the sequence.

How does the function ensure the Fibonacci sequence is built correctly?

• By starting with random numbers.

• By using a recursive approach.

• By subtracting terms from each other.

• By iteratively adding the last two terms.

What is the result of the Fibonacci function when called with the argument 5?

• The 5th term is 8.

• The 5th term is 3.

• The 5th term is 5.

• The 5th term is 13.