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

# UpCase

Convert a string to all uppercase.

## Declaration

Source position: systemh.inc line 1181

`function UpCase(`
`const s: shortstring`
`):shortstring; function UpCase(`
`c: Char`
`):Char; function UpCase(`
`const s: ansistring`
`):ansistring; function UpCase(`
`const s: UnicodeString`
`):UnicodeString; function UpCase(`
`c: UnicodeChar`
`):UnicodeChar; function UpCase(`
`const s: WideString`
`):WideString;`

## Description

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

UpCase does not change the number of characters in the string.

## Errors

None.

## See also

Lowercase |  | Return lowercase version of a string.

## Example

    program Example72;

    { Program to demonstrate the upcase function. }

    var c:char;

    begin
      for c:='a' to 'z' do
        write(upcase(c));
      Writeln;
      { This doesn't work in TP, but it does in Free Pascal }
      Writeln(upcase('abcdefghijklmnopqrstuvwxyz'));
    end.