Arduino ZERO to HERO: 30+ Arduino Projects Learn by doing practical project book for beginners and inventors. by Natheem S Arsath

Author:Natheem S, Arsath [Natheem S, Arsath]
Language: eng
Format: epub
Published: 2021-11-11T16:00:00+00:00

Input/output

The constants utilised to define a pin's mode will be either INPUT or OUTPUT with the pinMode() function.

pinMode(13, OUTPUT);

if

if statements are used to determine if a condition has been attained, it performs any statements inside the brackets if the statement is true, such as a certain analog value being greater than a certain number. If false, the program skips the statement. Here's what an if statement looks like:

if (someVariable ?? value)

{

doSomething;

}

Here, the variable someVariable is compared with another value, which may be a variable or a constant. The statements inside brackets are run if the condition inside the parentheses is true, A program taking care of the brackets skips them if they are not present.

Note: Make sure you never accidentally use ‘=’. If (x=10), for example. x is defined to the value 10 and thus is always true, even though technically it is valid. It is better to instead use ‘==’, as in if (x==10), which simply checks that the value x is the same as 10, Think of ‘=’ as “equals” opposed to ‘==’ being ‘is equal to”.

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