Solved

VB to Delphi-how to use "step"??

Posted on 2002-04-06
4
212 Views
Last Modified: 2010-04-04
Let`s see this code:
------------
for i = 1 to 100 step 2
.....
next i
------------
but in Pascal, there isn`t the keyword "step",so how can i do ?thank you very much.
--
I come from China and i 18 years old,my english is very poor.I want to make friends with you!
E_mail:fanweixiao@sina.com
0
Comment
Question by:VitaminC
[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
4 Comments
 
LVL 7

Expert Comment

by:Motaz
ID: 6923448
Hi VitaminC
In Object Pascal there is only two types of for loop:
for i:= 1 to 10 do
and
for i:= 10 to 1 do
so that if you want to step by 2 to 100 you can do this:
for i:= 1 to 50 do
  Writeln((i - 1) * 2 + 1);

Motaz
motaz1@yahoo.com
0
 
LVL 44

Expert Comment

by:CrazyOne
ID: 6923464
Or something like this

var
  i: Integer;
begin

  i := 1;
  repeat
    DoYourCodeHere;
    Inc(i, 2);
  until i >= 100;

end;
0
 
LVL 10

Accepted Solution

by:
Jacco earned 10 total points
ID: 6923505
Motaz:
for i:= 10 downto 1 do
You forgot downto. I forget it too sometimes. But Delphi will not do anything then :-)

VitaminC:
You could also use a while loop (the third type)

i := 1;
while i <= 100 do
begin
  DoYourStuff;
  Inc(i, 2);
end;

Regards Jacco





0
 
LVL 12

Expert Comment

by:Lee_Nover
ID: 6924233
:)
if you still want the 'for' loop you could do an unoptimized func like

for I:=0 to 100 do
  if (I mod 2) = 0 then DoYourCode;

while and repeat are preferable for this kinda thing
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
find a node in VST 2 93
When i run adoquery my application freezes 26 214
Dev express lookupcombo 3 64
Microsoft Access 97 and Delphi XE2 9 85
This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Introduction I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need. This article will address some of the concepts when dealing with a multithreaded delphi database…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

710 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