Format function
From Free Pascal wiki
Jump to navigationJump to searchThe format function formats a series of values into a string. For an in-depth explanation see the on line documentation.
The formatting rule for each given argument is:
% [ArgumentIndex] ['-'] [width] [. precision] ArgumentType
d | Decimal (integer) |
e | Scientific |
f | Fixed |
g | General |
m | Money |
n | Number (floating) |
p | Pointer |
s | String |
u | Unsigned decimal |
x | Hexadecimal |
Integer formatting
%d | Will print the integer as it is. |
%8d | Will pint the integer as it is. If the number of digits is less than 8, the output will be padded on the left. |
%-8d | Will pint the integer as it is. If the number of digits is less than 8, the output will be padded on the right. |
%.8d | Will pint the integer as it is. If the number of digits is less than 8, the output will be padded on the left with zeroes. |
String formatting
%s | Will print the string as it is. |
%8s | Will pint the string as it is. If the string has less than 8 characters, the output will be padded on the left. |
%-8s | Will pint the string as it is. If the string has less than 8 characters, the output will be padded on the left. |
Example to use
procedure TForm1.Button1Click(Sender: TObject);
var
title, title2,
underline,
line, row1, row2, row3,
fmt : string;
i : integer;
begin
fmt := '%-12s';
title := format(fmt,['Column 1']) + format(fmt,['Column 2']) ;
for i := 1 to 12 do underline := underline + '-';
underline := underline + underline ;
fmt := '%-12d';
line := format(fmt,[15]) + format(fmt,[8]) ;
fmt := '%12s';
title2 := format(fmt,['Column 1']) + format(fmt,['Column 2']) ;
fmt := '%12d';
row1 := format(fmt,[15]) + format(fmt,[8]) ;
row2 := format(fmt,[1005]) + format(fmt,[809]) ;
fmt := '%12.5d';
row3 := format(fmt,[1005]) + format(fmt,[809]) ;
Memo1.Lines.Add( title );
Memo1.Lines.Add( underline );
Memo1.Lines.Add( line );
Memo1.Lines.Add( '' );
Memo1.Lines.Add( title2 );
Memo1.Lines.Add( underline );
Memo1.Lines.Add( row1 );
Memo1.Lines.Add( row2 );
Memo1.Lines.Add( row3 );
end;
The above statements will create a set of strings that look like:
Column 1 Column 2 ------------------------ 15 8
Column 1 Column 2 ------------------------ 15 8 1005 809 01005 00809
See also
- Format
- FloatToStrF
- FormatFloat
- IntToHex - Convert an integer into a hexadecimal string.