Lesson 19 - Using if Statement
Learn how if conditions control decisions using relational and logical operators in beginner-friendly flow logic.
Lesson Template
Control Structure
Use if, else, and loops to control program behavior.
Lesson Overview
This lesson introduces the core ideas behind Control Structure.
- if/else
- for loop
- while loop basics
Example Code
if (buttonState == HIGH) {
digitalWrite(2, HIGH);
} else {
digitalWrite(2, LOW);
}Lessons in This Section
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Lesson 20 - Using else Statement
Learn how else handles the false path, compare if vs if-else, and write cleaner decision logic.
Lesson 21 - Using for Loop
Learn for loop syntax, flow, and best practices for controlled repetition in Arduino sketches.
Lesson 22 - Using while Loop
Learn while loop syntax, condition behavior, and safe patterns to avoid infinite loop issues.
Lesson 23 - Using do...while Loop
Learn post-condition loop flow with do...while, including safe exit patterns and common mistakes.
Lesson 24 - Using break Statement
Learn how break exits loops and switch blocks early to stop execution at the right moment.
Lesson 25 - Using continue Statement
Learn how continue skips the current loop cycle and moves directly to the next iteration.
Lesson 26 - Using switch...case Statement
Learn multi-option branching with switch...case, default handling, and correct break usage.
Lesson 27 - Using return Statement
Learn function-level exit flow with return, including value-return and early-return patterns.
Lesson 28 - Understanding goto (and Why to Avoid It)
Learn how goto labels work, why jump-based flow is risky, and safer structured alternatives.