\section{STRSTR String Search Function}

\subsection{Usage}

Searches for the first occurance of one string inside another.
The general syntax for its use is
\begin{verbatim}
   p = strstr(x,y)
\end{verbatim}
where \verb|x| and \verb|y| are two strings.  The returned integer \verb|p|
indicates the index into the string \verb|x| where the substring \verb|y|
occurs.  If no instance of \verb|y| is found, then \verb|p| is set to
zero.
\subsection{Example}

Some examples of \verb|strstr| in action
\begin{verbatim}
--> strstr('hello','lo')
ans = 
  <int32>  - size: [1 1]
 4  
--> strstr('quick brown fox','own')
ans = 
  <int32>  - size: [1 1]
 9  
--> strstr('free stuff','lunch')
ans = 
  <int32>  - size: [1 1]
 0  

\end{verbatim}
