This video tutorial explains three methods to comment out code in Arduino: single line comments, multiline comments, and preprocessor directives. It also introduces a keyboard shortcut for toggling comments and demonstrates the practical application of these methods in the Arduino IDE. The tutorial concludes with a review of the techniques covered.

What is the main purpose of commenting out code in Arduino programs?

• To temporarily disable code

• To change the color of the code

• To permanently delete code

• To highlight important code

Which symbol is used for single-line comments in Arduino?

• //

• /*

• #

• --

What is the keyboard shortcut for commenting out a line of code on a Mac?

• Alt + /

• Command + /

• Ctrl + /

• Shift + /

How do you start a multiline comment in Arduino?

• #

• --

• //

• /*

Why can't the keyboard shortcut be used to uncomment multiline comments?

• It adds more comments instead

• It only works for single-line comments

• It deletes the code

• It changes the code color

What symbol is used to start a preprocessor directive in Arduino?

• //

• /*

• #

• --

What value should be used in a preprocessor directive to exclude code?

• True

• False

• 0

• 1