Syntax and control flow

Learning objective

• Write and combine Lucia control structures safely.

Key syntax

if (score >= 90) {
    print("A");
} else if (score >= 70) {
    print("B");
} else {
    print("C");
}

Examples

switch (day) {
    case 1: print("Mon");
    case 2: print("Tue");
    default: print("Other");
}

for (let i: int = 0; i < 3; i++) { print(i); }
while (ready) { break; }
do { continue; } while (false);

Common mistakes

• Using break inside switch (in Lucia, break is for loops only).
• Using return outside functions.

Suggested practice

• Implement a menu program using switch, loops, and try/catch/finally.

Related

• operators-and-expressions
• diagnostics