In Arduino programming, you can use various math operators to perform arithmetic and logical operations on numeric values. These operators are similar to those found in many other programming languages. Here are some of the most commonly used Arduino math operators:
Addition (+):
The addition operator is used to add two or more numbers together.
int result = 5 + 3; // result will be 8
Subtraction (-):
The subtraction operator is used to subtract one number from another.
int result = 10 - 4; // result will be 6
Multiplication (*):
The multiplication operator is used to multiply two or more numbers.
int result = 6 * 7; // result will be 42
Division (/):
The division operator is used to divide one number by another.
float result = 15.0 / 2.0; // result will be 7.5
Modulus (%):
The modulus operator is used to find the remainder when one number is divided by another.
int remainder = 10 % 3; // remainder will be 1
Increment (++) and Decrement (–):
These operators are used to increase or decrease the value of a variable by 1, respectively.
int count = 5;
count++; // count is now 6
count--; // count is now 5 again
Assignment (=):
The assignment operator is used to assign a value to a variable.
int x = 10; // x is assigned the value 10
Compound Assignment Operators (+=, -=, *=, /=, %=):
These operators combine an arithmetic operation with assignment. They perform the operation and then assign the result back to the variable.
int total = 20;
total += 5; // equivalent to total = total + 5; (total is now 25)
Comparison Operators (==, !=, <, >, <=, >=):
These operators are used to compare two values and return a Boolean result (true or false).
int a = 10;
int b = 5;
bool isEqual = (a == b); // isEqual will be false
Conclusion
These operators are fundamental for performing mathematical and logical operations in Arduino sketches and are essential for controlling hardware based on sensor inputs and other conditions. You can use them to create complex algorithms and decision-making logic in your Arduino programs.
Happy Tinkering!
Recommendations:
If you don’t already own any Arduino hardware, we highly recommend purchasing the Elegoo Super Starter Kit. This kit has everything you need to start programming with Arduino.
You can find out more about this kit here: Elegoo Super Starter Kit
