max()

Description

Calculates the maximum of two numbers.

Syntax

max(x, y)

Parameter Values

  • x: the first number. Allowed data types: any data type.
  • y: the second number. Allowed data types: any data type.

Return Values

  • The larger of the two parameter values.

Example Code

void setup() { Serial.begin(9600); int x = 2; int y = 3; int z = max(x, y); Serial.print("x = "); Serial.println(x); Serial.print("y = "); Serial.println(y); Serial.print("max = "); Serial.println(z); } void loop() {}

The result in Serial Monitor:

COM6
Send
x = 2 y = 3 max = 3
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

※ NOTES AND WARNINGS:

Perhaps counter-intuitively, max() is often used to constrain the lower end of a variable's range, while min() is used to constrain the upper end of the range.

Because of the way the max() function is implemented, avoid using other functions inside the brackets, it may lead to incorrect results

max(a--, 0); // avoid this - yields incorrect results // use this instead: max(a, 0); a--; // keep other math outside the function

See Also

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