Characters
- isAlpha()
- isAlphaNumberic()
- isAscii()
- isControl()
- isDigit()
- isGraph()
- isHexadecimalDigit()
- isLowerCase()
- isPrintable()
- isPunct()
- isSpace()
- isUpperCase()
- isWhitespace()
专题
ArduinoisDigit()
Analyse if a char is a digit (that is a number). Returns true if thisChar is a number.
Syntax
isDigit(thisChar)
Parameters
thisChar: variable. Allowed data types: char.
Returns
true: if thisChar is a number.
Example Code
if (isDigit(myChar)) { // tests if myChar is a digit
Serial.println("The character is a number");
}
else {
Serial.println("The character is not a number");
}
