isAlphaNumeric()
Analyse if a char is alphanumeric (that is a letter or a numbers). Returns true if thisChar contains either a number or a letter. isAlphaNumeric(thisChar)thisChar: variable. Allowed data types: char. true: if thisChar is alphanumeric.
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");
}