ObjectPascal
ThousandSeparator
Variable
The character used to display the thousands separator SysUtils unit
  var ThousandSeparator : char;
Description
The ThousandSeparator variable is used in currency and floating point display functions.
 
ThousandSeparator value is ',' by default, but is dependent on your Windows locale.
Notes
ThousandSeparator = LOCALE_STHOUSAND by default.
Related commands
CurrencyDecimals Defines decimal digit count in the Format function
CurrencyFormat Defines currency string placement in curr display functions
CurrToStrF Convert a currency value to a string with formatting
DecimalSeparator The character used to display the decimal point
Format Rich formatting of numbers and text into a string
NegCurrFormat Defines negative amount formatting in currency displays
 
Example code : Changing the thousands separator character
var
  amount : Currency;
begin
  amount := 1234567.89;    // 1,234,567 pounds 89 pence

  // Display with the default thousands separator
  WriteLn('Amount = '+FloatToStrF(amount, ffCurrency, 10, 2));

  // Display with a new thousands separator
  ThousandSeparator := ' ';
  WriteLn('Amount = '+FloatToStrF(amount, ffCurrency, 10, 2));
end;
Show full unit code
   Amount = ?1,234,567.89
   Amount = ?1 234 567.89