- Arduino is based on the C/C++ programming language; most of the functions of C++ are available, plus some specific extensions.
- The not equal to relational operator is one of the common language structure elements in Arduino and we'll see how it's used.
- For more specific articles, make sure to take a look at our dedicated Arduino Hub.
- Also, go to our Developer Tools section for more insightful information.
Single-board microcontroller Arduino uses C/C++ programming language, which comprises sets of functions, values (variables and constants), and language structure elements.
The not equal to a structure is part of the comparison operators, alongside equal to, less than, less than or equal to, greater than, greater than or equal to. The graphic sign is !=.
How do I use not equal to with Arduino?
Not equal to is an element that compares one variable on the left with a value or variable on the right of the operator.
It returns true when the two operands are not equal.
The syntax is usually the following:
x != y; // is false if x is equal to y and it is true if x is not equal to y
It’s recommended to compare variables of the same data type including the signed/unsigned type. Comparing variables of different data types is possible, but it could generate unpredictable results.
Note that the Arduino IDE uses C++, but since the physical environment is limited, not all C/C++ features can be used and the Arduino environment. As a result, Arduino has helper functions (specific extensions) to enable you to use the hardware easily.
FAQ: Read more about the Arduino programming language
- What does != mean in Arduino?
The sign refers to a specific condition, that should be used between two values to indicate that one value is not equal to the other value.
- What does == mean in Arduino?
The == sign in Arduino means that the values at each side of the condition are equal.
- What does void mean in Arduino?
Void is a keyword used in Arduino function declarations, and it indicates that the function is expected to return no information to the function from which it was called.