Solved

how pad you pad a string with leading spaces?

Posted on 1998-12-04
9
4,171 Views
Last Modified: 2012-05-04
I have a SSN variable
I want it fixed length of 9 with spaces padded in front.
example:
SSN 123       before
SSN       123 after
-----------------------
SSN 1234      before
SSN      1234 after

i guess i want it right justified with leading spaces.
anybody have any clue? Do I use LPAD???? if so, do i need
to find out the lenght of the SSN first?
thanks
0
Comment
Question by:waipahu
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
  • 2
  • +2
9 Comments
 
LVL 4

Expert Comment

by:erajoj
ID: 1349304
Is something like this what you want?:

function PadString(str: string; len:Integer; ch: Char):string;
begin
  Result := '';
  for iIndex := 1 to len-Length(str) do
    AppendStr(Result, ch);
  AppendStr(Result, str);
end;

/// John
0
 
LVL 35

Expert Comment

by:TimYates
ID: 1349305
Or : (a bit faster)

function PadString(str: string; len:Integer; ch: Char):string;
begin
  result := Trim( str ) ;
  while( Length( str ) < len ) do
    result := ch + result ;
end;

0
 

Author Comment

by:waipahu
ID: 1349306
I got it!
I used TOPAZ LPAD to do the left pad with spaces!
THank you all!

Can delphi be web enabled?  How would you do it?
Do i need a webserver of some sort?
Do I need the client-server version of delphi?

0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 4

Expert Comment

by:erajoj
ID: 1349307
Tim, could you please tell me in what way your code is faster?
Have you tested it? I don't think so.

/// John
0
 
LVL 35

Expert Comment

by:TimYates
ID: 1349308
Hmmm, thought it should be, due to one less assign being required...  I'll test it now...

It might have been a fraudulent assumption *grin*

Tim.
0
 
LVL 35

Expert Comment

by:TimYates
ID: 1349309
Heh...
sorry about that...
yours was faster than mine...

Hmmm...what can I say....

I apologise for my big mouth...

And here is an _even faster_ bit of code to make up for it :)

function MyPadString( str : string; len : Integer; ch : Char ):string;
var
  p : pChar ;
  l, ll : longint ;
begin
  p := allocMem( len + 1 ) ;
  FillChar( p^, len, ch ) ;
  l := len - Length( str ) ;
  ll := Length( str ) ;
  if( ll > len ) then ll := len ;
  if( l < 0 ) then l := 0 ;
  CopyMemory( pChar( integer( p ) + l ), @str[ 1 ], ll ) ;
  result := strpas( p ) ;
  Freemem( p, len + 1 ) ;
end;

Now, that _is_ fast :)

Cheers, and sorry again,

Tim.
0
 
LVL 2

Expert Comment

by:lortega
ID: 1349310
KISS concept...

function PadLString(mString :String; Spaces :Integer):String;
begin
   result := StringOfChar(' ', Spaces) + Trim(mString)
end;

function PadRString(mString :String; Spaces :Integer):String;
begin
   result := Trim(mString) + StringOfChar(' ', Spaces);
end;


good luck,
luis
0
 

Accepted Solution

by:
teechong earned 10 total points
ID: 1349311
Don't you think using Format will do the job?
Format ('SSN %9d', [ssnnum] );

Of course, your labels or controls should use a fixed pitch font for proper display.
0
 

Author Comment

by:waipahu
ID: 1349312
Thanks for everybody who contributed!!!
I really appreciate it a lot!
This website is the best!
This is very helpful!
Go public....make big bucks (IPO)...

bye

0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question