Forloop and table at LaTeX

Question

Here is the LaTeX code for my table:

  \begin{table}{| c || c | c | c || c | c | c | }  
  \caption{Examples of the concepts. \label{tab:conceptsimgs}}\\   
  \hline  
  \backslashbox{Concept}{Class} &\multicolumn{3}{|c||}{Negative Class} & \multicolumn{3}{|c|}{Positive Class}  \\  
  \hline  

  \forloop{themenumber}{1}{\value{themenumber} < 4}{  
        %\hline   
        \arabic{themenumber}  
        \forloop{classnumber}{0}{\value{classnumber} < 2}{  
            \forloop{imagenumber}{1}{\value{imagenumber} < 4}{  
                & 0  
            }  
        }  
        \\  
        \hline  
  }  

  \end{table}

However, the result is something wrong. At the end of the table, there is one more thing, as shown here:

http: // www . freeimagehosting. network /image.php? c702bfc838.png

How can i fix this?

Answer 1

This is unpleasant. I created a minimal example that demonstrates the problem, see below. Try compiling this and looking at the results.

, , , -— tabular forloop, \addtocounter. , . , , .

\documentclass{article}
\usepackage{forloop}

\newcounter{themenumber}  
\newcounter{test}

\begin{document}
% this is your table (minimal example)
\begin{tabular}{| c |}  
  \forloop{themenumber}{1}{\value{themenumber} < 2}{x\\ \hline}   
\end{tabular}
\vspace{2cm}

% this is what you wanted to have
\begin{tabular}{| c |}  
x \\ \hline
\end{tabular}
\vspace{2cm}

% this is what forloop produces
\begin{tabular}{| c |}  
x \\ \hline \addtocounter{test}{1}
\end{tabular}

\end{document}