Moodle plugins directory: Virtual Programming Lab | Moodle.org
Virtual Programming Lab
Activities ::: mod_vpl
Maintained by 
Juan Carlos Rodríguez-del-Pino
Part of set VPL - Virtual Programming lab.
VPL is an activity module to manage programming assignments
Latest release:
2242 sites
2k downloads
156 fans
Current versions available: 6
Virtual Programming Lab for Moodle
VPL- Virtual Programming Lab is a activity module that manage programming assignments and whose salient features are:
- Enable to edit the programs source code in the browser
- Students can run interactively programs in the browser
- You can run tests to review the programs.
- Allows searching for similarity between files.
- Allows setting editing restrictions and avoiding external text pasting.
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Contributors
Juan Carlos Rodríguez-del-Pino (Lead maintainer)
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If you want to avoid that the user interact when the students RUN their code you must modify the default script of the language you are using and redirect the standar input to /dev/null.
e.g. if you are using java you must get the java default script and copy it to your vpl_run.sh , then replace the line
echo "java -enableassertions $MAINCLASS" >> vpl_execution
by
echo "{" >> vpl_execution
echo "java -enableassertions $MAINCLASS" >> vpl_execution
echo "} < /dev/null" >> vpl_execution
I recomend to use the "based on" feature.
Best regards.
you can use java classes and packages in VPL. To resolve the problem you need to give full detail of your code and how you use it in VPL.
Best regards.
I am able to run the following c program.
but I need to evaluate this program. please let us know if anyone can help me.
#include #include #include int main()
{
int pid, id;
if(fork() == 0)
{
/* open for writing */
printf("From child %d\n",getpid());
raise(2);
}
pid=wait(&id);
printf("From parent \n");
printf("Signal no= %d \n",id &355);
//waitpid(-1, NULL, 0);
return 0;
}
Best regards,
Juan Carlos.
Is there a support in VPL for Visual Basic?
Thank you,
Meir
I'm not sure it's worth mentioning, I've modified locally the vpl_evaluate.cpp to cope with dot '.' in program output compared to expected output in vpl_evaluate.cases Else, punctuation ("Hi.") is confused with numbers (".5").
Here some explanation with a short example.
Suppose we want to test a program "+1" with the test.case :
Case = Test zero
input = 0
output = 1
Here a program solution (in C) :
int main() {
int n;
scanf("%d",&n);
printf("%d",n+1);
return 0;}
You can even give better solution :
int main() {
int n;
printf("Give a number ");
scanf("%d",&n);
printf("+1 : %d",n+1);
return 0;}
It works! VPL find the 0 and the 1 of the test.case. Great! It was not sure because of extra texts ("Give ..." and "+1 :"), but VPL skip these texts
But it does not work for :
int main() {
int n;
printf("Give a number.");
scanf("%d",&n);
printf("+1 : %d",n+1);
return 0;}
What's the difference? The difference is in the dot "." in the text "Give a number."! VPL think there is a number here...
The problem is in vpl_evaluate.cpp isNumStart
bool NumbersOutput::isNumStart(char c){
if(isdigit(c)) return true;
return c=='+' || c=='-' || c=='.';}
Yes, some numbers .5, .0, ... begin with a dot ".", but "." alone?
So I've changed it to :
bool NumbersOutput::isNumStart(char c){
if(isdigit(c)) return true;
return c=='-' ;}
And now, last program works. (but ".5" are to be written "0.5")
Best for you,
Denis B.
ps: There must be other solutions with better lexical analysis to recognize true numbers.
All done for my VPL, but when in my code python, using third party (example: stdio.py), (import stdio), i do not know where can i put the file stdio.py on Server of JAIL.
Thanks!!!
your comment is a bug that has been fixed in the 3.3. We use now a regular expression to detect numbers.
see
https://github.com/jcrodriguez-dis/moodle-mod_vpl/commit/b8fc63174337a883f8f973dc3497ef9698512e91#diff-730b93876f4d34ec69e467370ecaefe9
Install the third party package on the jail server and restart the service.
You also can add files to specific activities as "execution files" and remember to mark the files as "Files to keep when running".
- add files to specific activities as "execution files" and remember to mark the files as "Files to keep when running": Ok - Done, but
- Install the third party package on the jail server and restart the service: Not done. In my server, i added third party to default package of Python, and test success on server when call function of third party.
Is it possible to download all student submission attempts as zip for a particular user? Right now(v3.2.5) supports to download all latest submissions for all users.
the 3.2.5 version has not available this feature. The download of all the student's submissions is already implemented in the 3.3 version.
Best regards.
I have created the Jail Server but when I try to connect to the server via https I get a warning about the certificate, and then a 404 error. Does this mean that the server is being contacted but that the jail server software itself is not installed correct, or is this not an assumption I can make (that the certificate notification is not evidence of a successful connection to the physical server or URL)?
When I log in to the server via PuTTY and go to the root of the directory structure I can see a directory called jail; is this where it should be residing?
Sorry but not yet getting any OK message and trying to identify why not.
the certificate message may be due to the use of a selfsigned certificate.
The 404 message may be because you are not using the path /OK.
https://server[:SECURE_PORT]/OK
best regards.
This comments system is apropiate for very simple questions.
Please, for user's questions/sugestions use the forum,
for installer's questions/bugs use github and give details about the version of plugin, jail server and jail server OS of your instalation
https://github.com/jcrodriguez-dis
Best regards,
Juan Carlos