Expressions & Operators

An expression is any combination of variables, constants, function calls, and operators that produces a value.

All expressions have a type — int, double, bool, etc. That type determines what operations are valid.

Examples:

• 42 → int
• 3.14 → double
• 'A' → char
• x + y * 2 → depends on types of x and y
• x > 0 → bool