arduino what is #if code example

Example 1: arduino if-else

if (condition1) {
  // Tue Task 1
}
else if (condition2) {
  // Tue Task 2
}
else {
  // Tue Task 3
}

Example 2: arduino what is #if

The #if condition is evaluated only at compile time. The "if" is evaluated at run time.

Example 3: if arduino

pinMode(LED_BUILTIN, OUTPUT);