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

# LowerCase

Return lowercase version of a string.

## Declaration

Source position: systemh.inc line 1182

`function LowerCase(`
`const s: shortstring`
`):shortstring; overload; function LowerCase(`
`c: Char`
`):Char; overload; function LowerCase(`
`const s: ansistring`
`):ansistring; function LowerCase(`
`const s: UnicodeString`
`):UnicodeString; function LowerCase(`
`c: UnicodeChar`
`):UnicodeChar;`

## Description

Lowercase returns the lowercase version of its argument C. If its argument is a string, then the complete string is converted to lowercase. The type of the returned value is the same as the type of the argument.

Lowercase does not change the number of characters (or bytes) in an ansistring.

## Errors

None.

## See also

Upcase |  | Convert a string to all uppercase.

## Example

    program Example73;

    { Program to demonstrate the Lowercase function. }

    var c:char;

    begin
      for c:='A' to 'Z' do
        write(lowercase(c));
      Writeln;
      Writeln(Lowercase('ABCDEFGHIJKLMNOPQRSTUVWXYZ'));
    end.