Kdtyjb

I am trying to use the table environment inside the solution environment of the exam documentclass. Unfortunately this doesnt work as stated in this question since table is also a float.

The solution environment internally uses a vbox and this has as a consequence that floats are not allowed inside this environment. Instead of using the floating environment table you can use a center environment

Since they work outside of the solution environment i am looking for a way to modify begin{table} ... end{table} to act as it is outside the solution and inside replaces itself with begin{center}...end{center}.

Fortunately as this post shows its easy to find out whether or not you are inside a solution environment. I tested this and it works.

However since the documents i have to adapt to the exam documentclass are numerous and are also used in other documentclasses I would ideally not create a new environment but adapt the table environments similar to what happend here to the figure or here to tabular environment. This is my code so far:
UPDATE: I dont know why, but with center instead of begin{center} the error is gone and also allows a way to tread the optional argument of table

documentclass{exam}



letoldtabletable

letendoldtableendtable



renewenvironment{table}[1][h]

{ifinner center    else  oldtable[#1] fi}

{ifinner endcenter else  endoldtable  fi}



begin{document}



begin{questions} %error is no question 

printanswers



question{Question featuring a table environment}



begin{table}[h]

    begin{tabular}{|ll|}

        Question & in  \

        Question & part \

    end{tabular}

end{table}





begin{solution}

Solution featuring a table environment



    begin{table}[h]

        begin{tabular}{|ll|}

            Solution & in  \

            Solution & part \

        end{tabular}

    end{table}



end{solution}



end{questions}



end{document}

But I fear I am not handling the paramter of table correct, since this leads to the error: Unknown float option `['. begin{table}[

This solution works outside "inner" and can handle the optional argument of table, however if ifinner is true i get the error

Extra }, or forgotten endgroup. end{table}

Does anyone has a suggestion on how to adapt table based on the environment?

Thank you very much

I found a solution and posting it here as answer if someoneelse is facing this issue. The (in hindsight obvious) problem was that ifinner works in the beginning, because it is a floating environment, but as soon as table begins it is not anymore. Therefor the endcenter could no be reached. I have tried a few alternatives and found the easiest way is to define a custom boolean that checks if the ifinner of the modified table is reached and use this to set a boolean. On the endtablethis boolean can then be used to take care of ending it correctly.

letoldtabletable

letendoldtableendtable

newififinsidefloatingenv  %set boolean for 

insidefloatingenvfalse     %not necessary but to be sure its false



renewenvironment{table}[1][h]

{ifinner               center insidefloatingenvtrue     else    oldtable[#1]   fi}

{ifinsidefloatingenv   endcenter insidefloatingenvfalse else    endoldtable    fi}