isAlpha()

Description

Check if a character is alpha (that is a letter) or not. Returns true if the character contains a letter.

Syntax

isAlpha(thisChar)

Parameter Values

  • thisChar: variable. Allowed data types: char.

Return Values

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

Example Code

if (isAlpha(myChar)) { // tests if myChar is a letter Serial.println("The character is a letter"); } else { Serial.println("The character is not a letter"); }

See Also

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