[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

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

Posted on 2002-04-06
4
Medium Priority
?
229 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
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 40 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

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…
How can you see what you are working on when you want to see it while you to save a copy? Add a "Save As" icon to the Quick Access Toolbar, or QAT. That way, when you save a copy of a query, form, report, or other object you are modifying, you…
Free Data Recovery software is an advanced solution from Kernel Tools to recover data and files such as documents, emails, database, media and pictures, etc. It supports recovery from physical & logical drive after a hard disk crash, accidental/inte…

611 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