Conditions — Learn bubblecode

Programs need to make decisions. bubblecode uses if, else, and end if with English-like comparisons.

Simple if

if.bubble

put 90 into score
 
if score is greater than 80 then
say "Great job!"
end if

The code inside if ... end if only runs when the condition is true.

if / else

Use else to handle what happens when the condition is false:

ifelse.bubble

put 15 into age
 
if age is greater than 17 then
say "You can drive!"
else
say "Too young to drive."
end if

Multiple conditions

Chain conditions with else if:

grades.bubble

put 75 into score
 
if score is greater than 90 then
say "Grade: A"
else if score is greater than 80 then
say "Grade: B"
else if score is greater than 70 then
say "Grade: C"
else
say "Grade: F"
end if

Comparisons you can use

Here are the English-like comparisons bubblecode supports:

is or is equal to — checks equality
is not or is not equal to — checks inequality
is greater than — larger
is less than — smaller
is greater than or equal to — at least
is less than or equal to — at most

compare.bubble

put 10 into x
 
if x is 10 then
say "x is ten"
end if
 
if x is not 5 then
say "x is not five"
end if
 
if x is greater than or equal to 10 then
say "x is at least 10"
end if

Exercise

Create a variable "temp" with value 35. If temp is greater than 30, print "It is hot!". Otherwise print "It is cool."

exercise.bubble

-- Check the temperature
put 35 into temp
 
if temp is greater than 30 then
say ""
end if

Quiz

Question 1 of 3

What keyword ends an if block in bubblecode?