>>523
\documentclass{jarticle}
\newcommand{\CPP}[1]{#1\nolinebreak\hspace{-.05em}\raisebox{.4ex}{\tiny\textbf +}\nolinebreak\hspace{-.10em}\raisebox{.4ex}{\tiny\textbf +}}
\begin{document}
\CPP{C}
\end{document}