isAlphaNumeric.adoc

title	categories	subCategories
isAlphaNumeric()	Functions	Characters

isAlphaNumeric(thisChar)

Description

Analyse if a char is alphanumeric (that is a letter or a numbers). Returns true if thisChar contains either a number or a letter.

Syntax

`isAlphaNumeric(thisChar)`

Parameters

thisChar: variable. Allowed data types: char

Returns

true: if thisChar is alphanumeric.

Example Code

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

See also

• LANGUAGE char

• LANGUAGE if (conditional operators)

• LANGUAGE while (conditional operators)

• LANGUAGE read()