sq()
Description
Calculates the square of a number: the number multiplied by itself.
Syntax
sq(x)
Parameter Values
- x: the number. Allowed data types: any data type.
Return Values
- The square of the number. Data type: double.
Example Code
void setup() {
Serial.begin(9600);
int x = 4;
double y = sq(x);
Serial.print("The square of ");
Serial.print(x);
Serial.print(" is ");
Serial.println(y);
}
void loop() {}
The result in Serial Monitor:
8
Serial.println("Hello World!");
Message (Enter to send message to 'Arduino Uno' on 'COM15')
New Line
9600 baud
The square of 4 is 16.00
※ NOTES AND WARNINGS:
Because of the way the sq() function is implemented, avoid using other functions inside the brackets, it may lead to incorrect results.
This code will yield incorrect results:
int inputSquared = sq(Serial.parseInt()); // avoid this
Use this instead:
int input = Serial.parseInt(); // keep other operations outside the sq function
int inputSquared = sq(input);
See Also
※ ARDUINO BUY RECOMMENDATION
| Arduino UNO R3 | |
| Arduino Starter Kit |
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