It looks like you're new here. If you want to get involved, click one of these buttons!

- 141.1K All Categories
- 103.8K Programming Languages
- 6.5K Assembler Developer
- 1.9K Basic
- 40K C and C++
- 2.9K C#
- 7.9K Delphi and Kylix
- 4 Haskell
- 9.7K Java
- 4.1K Pascal
- 1.3K Perl
- 2K PHP
- 551 Python
- 37 Ruby
- 4.4K VB.NET
- 1.6K VBA
- 20.9K Visual Basic
- 2.6K Game programming
- 317 Console programming
- 93 DirectX Game dev
- 1 Minecraft
- 112 Newbie Game Programmers
- 2 Oculus Rift
- 9K Applications
- 1.8K Computer Graphics
- 745 Computer Hardware
- 3.5K Database & SQL
- 535 Electronics development
- 1.6K Matlab
- 628 Sound & Music
- 258 XML Development
- 3.3K Classifieds
- 199 Co-operative Projects
- 199 For sale
- 190 FreeLance Software City
- 1.9K Jobs Available
- 604 Jobs Wanted
- 211 Wanted
- 2.9K Microsoft .NET
- 1.8K ASP.NET
- 1.1K .NET General
- 3.4K Miscellaneous
- 7 Join the Team
- 356 Comments on this site
- 70 Computer Emulators
- 2.1K General programming
- 187 New programming languages
- 639 Off topic board
- 220 Mobile & Wireless
- 92 Android
- 126 Palm Pilot
- 340 Multimedia
- 156 Demo programming
- 184 MP3 programming
- Bash scripts
- 27 Cloud Computing
- 53 FreeBSD
- 1.7K LINUX programming
- 371 MS-DOS
- Shell scripting
- 321 Windows CE & Pocket PC
- 4.1K Windows programming
- 943 Software Development
- 417 Algorithms
- 68 Object Orientation
- 92 Project Management
- 95 Quality & Testing
- 270 Security
- 7.7K WEB-Development
- 1.8K Active Server Pages
- 62 AJAX
- 6 Bootstrap Themes
- 55 CGI Development
- 28 ColdFusion
- 224 Flash development
- 1.4K HTML & WEB-Design
- 1.4K Internet Development
- 2.2K JavaScript
- 37 JQuery
- 309 WEB Servers
- 156 WEB-Services / SOAP

Can someone tell me if on the net exists any site or tutorial that explains these recursive procedures or functions.

Thanks

Terms of use / Privacy statement / Publisher: Lars Hagelin

Programmers Heaven articles / Programmers Heaven files / Programmers Heaven uploaded content / Programmers Heaven C Sharp ebook / Operated by CommunityHeaven

© 1997-2017 Programmersheaven.com - All rights reserved.

## Comments

117: Can someone tell me if on the net exists any site or tutorial that explains these recursive procedures or functions.

: Thanks

:

hi recursive??

757: Can someone tell me if on the net exists any site or tutorial that explains these recursive procedures or functions.

: Thanks

Recursive functions are pretty easy to understand, but very confusing to use. Basically, you make a procedure that calls itself. This is done to accomplish things that would otherwise take alot of coding.

An example of recursive procedure is a FILL procedure in graphics or an equation such as the "Towers of Hanoi" (complicated ancient Monk problem)

Here is a basic recursive function:

[code]

FUNCTION Recursion(X : Word) : Word;

Begin

If X < 10 Then

Recursion := Recursion(X+1);

WriteLn('Recursion Function #',X);

End;

Begin

Recursion(1);

End.

[/code]

If you were to run this, you would have the following steps taken:

[01] Recursion(1) is called

[02] X(=01) < 10 Then Recursion := Recursion(X+1) is called;

[03] X(=02) < 10 Then Recursion := Recursion(X+1) is called;

[...]

[08] X(=07) < 10 Then Recursion := Recursion(X+1) is called;

[09] X(=08) < 10 Then Recursion := Recursion(X+1) is called;

[10] X(=09) < 10 Then Recursion := Recursion(X+1) is called;

[11] X(=10) is not < 10, so WriteLn('Recursion Function #',X);

[12] Exit Function and return to point where function was called

[13] X(=09)WriteLn('Recursion Function #',X);

[14] Exit Function and return to point where function was called

[15] X(=08)WriteLn('Recursion Function #',X);

[...]

[26] Exit Function and return to point where function was called

[27] X(=02)WriteLn('Recursion Function #',X);

[28] Exit Function and return to point where function was called

[29] X(=01)WriteLn('Recursion Function #',X);

[30] Done!

Your output would be:

[code]

Recursion Function #10

Recursion Function #9

Recursion Function #8

Recursion Function #7

Recursion Function #6

Recursion Function #5

Recursion Function #4

Recursion Function #3

Recursion Function #2

Recursion Function #1

[/code]

Hope this explains it a bit.

Phat Nat