[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'sysutils' (#rtl)

StrToIntDef

Convert a string to an integer value, with a default value.

Declaration

Source position: sysstrh.inc line 143

function StrToIntDef(

  const S: string;

  Default: LongInt

):LongInt;

Description

StrToIntDef will convert a string to an integer. If the string contains invalid characters or has an invalid format, then Default is returned.

To be successfully converted, a string can contain a combination of numerical characters, possibly preceded by a minus sign (-). Spaces are not allowed.

Errors

None.

See also

IntToStr

  

Convert an integer value to a decimal string.

StrToInt

  

Convert a string to an integer value.

Example

Program Example82;

{$mode objfpc}

{ This program demonstrates the StrToInt function }

Uses sysutils;

Begin
  Writeln (StrToIntDef('1234',0));
  Writeln (StrToIntDef('-1234',0));
  Writeln (StrToIntDef('0',0));
  Try
    Writeln (StrToIntDef('12345678901234567890',0));
  except
    On E : EConvertError do
      Writeln ('Invalid number encountered');
  end;
End.

Documentation generated on: May 14 2021