In a while, crocodile
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Lesson details
Key learning points
- In this lesson, we will investigate iteration using while loops, offering a chance to retrieve and apply relevant knowledge. In the first activities, we will practise using list operations in iterative contexts.
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3 Questions
Q1.
If the user types 1 on the keyboard, what will be the output of this program when it is executed?
The second letter is l
The second letter is, planet
There will be an error message
Q2.
If the user types 3 on the keyboard, what will be the output of this program when it is executed?
It's a rocky planet
The second letter is l
There will be an error message
Q3.
Suppose that the elif in line 8 is modified to an if. If the user types 1 on the keyboard, what will be the output of this program when it is executed?
It's a rocky planet
The second letter is e
There will be an error message
3 Questions
Q1.
Read the program below and answer the questions. You can use the reference table at the bottom of the page to see how the index method works. What will be the output of this program?
‘c’ + 1
3
d
Q2.
Read the program below carefully. When will the condition in the while loop become False?
When the length of the band list is 1
When the length of the band list is 2
When the length of the band list is 4
Q3.
Read the program below carefully. When will this while loop terminate?
When band is held in the band list
When guitar has been removed from the band list
When guitar is in the band list