Is it possible to end the backslash in the left upper corner of the table?

\documentclass{scrartcl}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\begin{document}
\begin{table}
\centering
\begin{tabular}{c|cc}
$c\backslash a$&0&1\\\hline
0&&\\
1&&\\
\end{tabular}
\end{table}
\end{document}

makecellpackage. I think an example is already provided in one of the older answers. Take a look to http://tex.stackexchange.com/questions/7262/diagonally-divided-table-cell for even another approach – d-cmst Aug 16 '16 at 10:46diagboxpackage… – cgnieder Aug 16 '16 at 11:07