Conditionals
“That language is an instrument of human reason, and not merely a medium for the expression of thought, is a truth generally admitted.”
—George Boole
“The way I feel about music is that there is no right and wrong. Only true and false.”
—Fiona Apple
In this chapter:
- Boolean expressions.
- Conditional statements: How a program produces different results based on varying circumstances.
- If, Else If, Else.
5.1 Boolean Expressions
What’s your favorite kind of test? Essay format? Multiple choice? In the world of computer programming, we only take one kind of test: a boolean test—true or false. A boolean expression (named for mathematician George Boole) is an expression that evaluates to either true or false. Let’s look ...
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