[SCIP] Exporting the solution to a file.

Gregor Hendel hendel at zib.de
Fri Apr 21 10:51:00 CEST 2017


Hi Daniel,

then, that is indeed unexpected behavior. Is it possible for you to 
rebuild your application in debug mode and send me a full backtrace 
after launching it inside a debugging tool?

Best,
Gregor

Am 21.04.2017 um 03:28 schrieb Daniel Herl Carrero:
> I already did that, I printed the solution in the console with 
> SCIPprintBestSol(scip,NULL,FALSE) and worked fine. The function fails 
> when I try to use it giving it a file to write in.
>
> 2017-04-18 16:30 GMT-03:00 Gregor Hendel <hendel at zib.de 
> <mailto:hendel at zib.de>>:
>
>     Dear Daniel,
>
>     I can definitely tell that this file is open. However, you may
>     have overread the profi advise to your stack overflow question to
>     check if there is a best solution. Please check this using either
>     SCIPgetBestSol() or SCIPgetNSols() prior to calling
>     SCIPprintBestSol().
>
>     Happy printing,
>     Gregor
>
>
>     Am 18.04.2017 um 20:57 schrieb Daniel Herl Carrero:
>>     Dear SCIPers,
>>
>>     I`m using the scip (3.2.1) API for C++ (in VS 2013) and resolving
>>     a simple LP. After SCIP reaches a solution I try to store the
>>     results in a file with the following code:
>>
>>     FILE* file;
>>         if ((file = fopen("Solution.sol", "w")) != nullptr){
>>             SCIP_CALL(SCIPprintBestSol(scip, file, FALSE));
>>             fclose(file);
>>         }
>>
>>     But the code throws me an Access Violation Error. The code
>>     succesfully creates the file but fails trying to execute the
>>     SCIPprintBestSol() function. I used the function to print the
>>     solution in the console and it works (
>>     SCIP_CALL(SCIPprintBestSol(scip, NULL, FALSE)); ) but it fails
>>     when I try to use it to write this solution to a file (like in
>>     the code above).
>>
>>     Has anyone encountered the same problem before? I really need to
>>     export the solutions and any help will be much appreciated.
>>
>>     Thanks!
>>     Daniel
>>
>>
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