4 

     4 

     5 \begin{document}

     5 \begin{document}

     6 

     6 

     7 \section*{Homework 6}

     7 \section*{Homework 6}

     8 

     8 

    10 

    10 

    11 \begin{enumerate}

    11 \begin{enumerate}

    12 \item (i) Give the regular expressions for lexing a language

    12 \item (i) Give the regular expressions for lexing a language

    13       consisting of whitespaces, identifiers (some letters

    13       consisting of whitespaces, identifiers (some letters

    14       followed by digits), numbers, operations \texttt{=},

    14       followed by digits), numbers, operations \texttt{=},