isDigit()

Description

Check if a character is a digit (that is a number) or not. Returns true if the character is a number.

Syntax

isDigit(thisChar)

Parameter Values

  • thisChar: variable. Allowed data types: char.

Return Values

  • true: If thisChar is a number.
  • false: Otherwise

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"); }

See Also

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