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TryStrToInt

unit
SysUtils
category
type conversion routines

declaration
function TryStrToInt(const s: string; out i : integer): boolean;

description
Converts a string to an integer, returns False if string does not represent a valid number.

example
var syold : string;
    iyold : integer;
    

syold := InputBox('Birth Year',
        'Please enter birth year', '1973'))

if TryStrToInt(syold, iyold) then         
  ShowMessage('You are now ' +
              IntToStr(2003 - iyold) +
             'years old!')
else
  ShowMessage('Please enter a number');

in real code

see also
StrToInt, IntToStr,


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