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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");
}
The result in Serial Monitor:
COM6
Autoscroll
Clear output
9600 baud
Newline
See Also
- Language : isAlpha()
- Language : isAscii()
- Language : isControl()
- Language : isDigit()
- Language : isGraph()
- Language : isHexadecimalDigit()
- Language : isLowerCase()
- Language : isPrintable()
- Language : isPunct()
- Language : isSpace()
- Language : isUpperCase()
- Language : isWhitespace()
- Language : char
- Language : if (conditional operators)
- Language : while (conditional operators)
- Language : read()
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