isAlphaNumeric()

Description

Check if a character is alphanumeric (that is a letter or a numbers) or not. Returns true if the character contains either a number or a letter.

Syntax

isAlphaNumeric(thisChar)

Parameter Values

  • thisChar: variable. Allowed data types: char.

Return Values

  • true: If thisChar is alphanumeric.
  • false: Otherwise

Example Code

if (isAlphaNumeric(myChar)) { // tests if myChar isa letter or a number Serial.println("The character is alphanumeric"); } else { Serial.println("The character is not alphanumeric"); }

See Also

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