Arduino IDE: Increment & Decrement Operator

About This Tutorial

This tutorial discusses what are increment operator and decrement operator, two of the many arithmetic operators, their two different structures, and how to use them in Arduino IDE.

Tutorial Info

Programming Platform: Arduino IDE
Difficulty: Programming Basics
Estimated Time: 1 Hrs
Arduino

Components Required

Image	Component	Quantity	Available in Kit
	evive	1	evive
	USB A-B Cable	1	evive

Increment Operator

The increment operator is an Arduino arithmetic operator that increments an integer variable by a value of one. This is useful in certain types of loops.

Two possible structures of increment operator:

Variable_Name++ : As the ‘++’ sign is after the variable name, it is a post increment operation. This means that the variable is first used in the statement and incremented after the statement execution.
++Variable_Name : As the ‘++’ sign is before the variable name, it is a pre increment operation. This means that the variable is incremented before execution of the statement.

Example showing the working of the post increment operation:

Example showing the working of the pre increment operation:

Decrement Operator

The decrement operator is used to decrement an integer variable by a value of one.

Two possible structures of increment operator:

Variable_Name – – : As the ‘–‘ sign is after the variable name, it is a post decrement operation. This means that the variable is first used in the statement and decremented after the statement execution.
– – Variable_Name : As the ‘–‘ sign is before the variable name, it is a pre decrement operation. This means that the variable is decremented before execution of the statement.

Example of post decrement operation

Example of pre decrement operation:

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