Ergebnis der Suchanfrage

• Forum: Object-Pascal / Delphi-Language

  is_numeric control number

    Delphi
    by sk.Silvia, 17. Jul 2006
  hi there
  is there a simple way to control if input-string is a real number (like in php is_numeric) (so i dont have to go by each char, count the dots and ask if char is in 0-9...)
  
  smt like
  
  if ReturnedError(strtofloat(input)) then ShowMessage('you dont entered a valid real number');