\begin{frame}[containsverbatim]
  \frametitle{\secname}
  \framesubtitle{\subsecname~II}

  \begin{exampleblock}{Exemple d'utilisation d'une boucle while}  
    \begin{verbatim}
char val = 0;
val = keyboardInput();
while(val < 1 || val > 5) {
  val = keyboardInput();
}\end{verbatim}
  \end{exampleblock}
\end{frame}