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Last Update: 2/6/2019

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Reference > Language > Functions > Characters > Isdigit

isDigit()

[Characters]

Description

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");
}