\documentstyle[12pt]{article}
\input{prepictex}
\input{pictex}
\input{postpictex}
\typein[\Fname]{Enter File Name to be input}
\begin{document}
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
Here, I put the figure,
\input{\Fname}
before this line.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
This is an example.
\end{document}