Int, Float, Bool

Every value belongs to a type that says what it is and what you can do with it. Three core types start you off.

An Int holds whole numbers like counts and indexes, with no fractional part at all.

Ints support the usual arithmetic. Add, subtract, and multiply them just as you would expect on whole numbers.

A Float stores numbers with a decimal point, perfect for measurements, prices, and anything fractional.

10 is an Int but 10.0 is a Float. The decimal point is what makes a literal a Float instead of an Int.

Dividing with / gives a Float result so fractions are not lost. That keeps precision when numbers do not divide evenly.

A Bool holds just one of two values: True or False. It answers yes-or-no questions in your logic.

Comparing values produces a Bool. The expression 3 > 2 evaluates to True, while 1 == 2 is False.

Bools feed your if-statements later. Storing a comparison in a clearly named Bool makes branching code read well.

Use Int when fractions cannot exist, like a head count. Reach for Float when a value can have a decimal.

Int, Float, and Bool already cover counting, measuring, and deciding. Most logic you write leans on these core types.

You write the literal 10.0 instead of 10 in your Mojo code. What type is that value?

Int counts, Float measures with decimals, and Bool holds True or False. Comparisons produce Bools that steer your logic. 🎯