Strings
No no no!
Write a program that asks the user for a task, a phone number, and a person. It outputs a message saying they shouldn't do the task that way.
Sample I/O:
Pop the hood
Multiple choice
What is a syntax error?
Looping for pets
We're going to add validation loops to the tip program. It's a topic that confuses some people.

Ray
Uh oh.
Don't worry, we'll take it easy. Let's start with a simple task.
Exercises: basic strings
Exercise
No no no!
Practice: string expressions
Evaluate some string expressions.
Keep asking: strings
Keep asking the user until they enter something valid.
Check the service level
Test user input to make sure it's valid.
Service level
Some string I/O, and if statements.
Pagination
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