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  Combination in OPL
(Organizer Programming Language)


This is the OPL version of our combination application.


You need Epoc OPL SDK (see tools section).

 Source code

Below is the opl file.

For .opo, please download the ZIP file.

REM Combination
REM Epoc


PROC go:
    LOCAL n%,p%

    FONT KFontCourierNormal18&, KgStyleBold%
    STYLE 4
    PRINT "Combination > Epoc > OPL"

    STYLE 2
    PRINT "Enter value for 'n'";
    STYLE 0
    PRINT ": ";
    INPUT n%

    STYLE 2
    PRINT "Enter value for 'p'";
    STYLE 0
    PRINT ": ";
    INPUT p%

    STYLE 0
    PRINT "Factorial(";n%;") = ";factorial:(n%)
    PRINT "Factorial(";p%;") = ";factorial:(p%)
    PRINT "Factorial(";n%-p%;") = ";factorial:(n%-p%)
    PRINT "Combination(";n%;",";p%;") = ";combination:(n%,p%)
    PRINT "[Press 'Enter']"

PROC factorial:(n%)
    IF (n% <= 1)
        RETURN 1
        ELSE RETURN n% * FACTORIAL:(n% - 1)

PROC combination:(n%, p%)
    RETURN factorial:(n%) / (factorial:(n% - p%) * factorial:(p%))


OPL is a BASIC-like language. There's hardly any overhead, here!

Another great asset of OPL is that you can develop your apps on your device as well... No need to carry your desktop computer in your bag!

Just like PocketC (for Palm and Pocket PC), OPL is a very convenient language for on-device development.

Install Combination (source code) and Combination.opo (executable) in any folder on your device or on the emulator, locate the .opo and run it! As EZ as 123 :)

There's also an ASCII version of the source code in Combination.txt, that you may want to load in your OPL Editor with the import feature. This is equivalent to the installation procedure above.

The core functions are: factorial:(), combination:() and go:().

Here's another screenshot of WINS emulator with the skin of a Sony-Ericsson P800:

To do this, you need to set up a P800.ini file in the \Epoc32\Data folder that contains the skin description. For your convenience, the P800.bmp is in the .zip mentioned above. Here's how the .ini looks:

ScreenWidth 205
ScreenHeight 324
ScreenOffsetX 57
ScreenOffsetY 159
LedOffsetX 120
LedOffsetY 32
LedGap 10
LedSize 0

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