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:

COM6
Send
The square of 4 is 16.00
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

※ 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

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Arduino UNO R3
Arduino Starter Kit
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