meet it

Lines run in order, one after another.

A program can have lots of lines. Ruby runs them in order, top to bottom, like ticking off a shopping list. Everything your program shows on the screen is called its .

puts shows its string, then moves to a new line. shows its string and stays where it is, so the next message carries on along the same line.

A puts with nothing after it has nothing to show, so you get a blank line. It is handy for spacing things out.

print "Ready, "
print "steady, "
puts "go!"
puts
puts "Off they run!"

print adds no spaces, so put a space inside the quotes when you want a gap.

guess first

How will this look on the screen?

Guess before you run it. Wrong guesses are how you learn, and nothing is marked.

print "Fish"
print "and"
puts "chips"

your turn

Your turn. Write a knock knock joke.

Type who is at the door on lines 3 and 4, the same both times. Put your punchline on line 6, then press run and enjoy your output.

Your code

press run to see what happens

fix it

The shopping list is all squashed. Can you fix it?

Broken code to fix

press run to see what happens

Run it and look at the output. Why are the three items squashed together?
print stays on the same line. Which command moves to a new line after its message?
Change each print to puts, then press run.

nailed it

you made the computer tell a joke. :D

Lines run in order, from top to bottom.
puts ends the line. print stays on it.
An empty puts makes a blank line.

new words in your collection

output
print

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