Big Idea 3 · Topic 3.4 · Exercise 1
Evaluate the String Builder
25 minutes
Back to the Topic 3.4 lessonAll CSP topics
How this page works
The writing boxes below are yours. What you type stays in this browser, is saved here as you go, and is never sent to us or to your teacher. Hand the written work in the way your teacher asked for it.
The graded check at the bottom is the part that records to your teacher's gradebook.
Part B, from your handoutNot recorded
Your handout says these are the same items available here. Part A stays on paper.
Q1 · 3 points on the handout
Using first, last, and string literals, write a single expression that outputs Lovelace, Ada (last name, a comma, a space, then first name). Show the exact literal you place between the names.
Q2 · 3 points on the handout
In Python, last[2] returns 'v', not the 2nd character of "Lovelace". Explain the off-by-one cause, and give the index that returns the 2nd character 'o'.
Q3 · 2 points on the handout
ENRICHMENT: The club wants a score equal to the number of vowels (a, e, i, o, u) in "Lovelace". Count them by hand, give the number, and describe in one sentence how a program could compute it by examining each character.
Q4 · 0 points on the handout
Next step: you evaluated these strings by hand. Now head to the Topic 3.4 page and type and run the harder versions, where the computer checks your output for you.
No graded check on this page yetNot recorded
About the line in your handout
Your handout says this exercise is available online and auto-graded. The exercise IS here, and it is the same work in the same order, but the auto-graded half is not written for this topic yet. Nothing on this page is scored or sent to your teacher.
Hand this in the way your teacher asked for it. Topic 1.1 has its graded check today, and the rest follow.