example-slides.tex

\documentclass[aspectratio=169]{beamer}

\usecolortheme[dark]{zenburn}

\title{An example presentation}
\author{Keith F. Prussing, Ph.D.}
\date{\today}
\usepackage{mwe}

\begin{document}

\begin{frame}
    \maketitle
\end{frame}

\begin{frame}
    \frametitle{A first frame}
    \blindtext
\end{frame}

\begin{frame}
    \frametitle{An image}
    \begin{figure}
        \includegraphics[height=0.8\textheight]{example-image-golden}
        \caption{Inclusion of an example image}
    \end{figure}
\end{frame}

\begin{frame}[fragile]
    \begin{lstlisting}[language=Fortran]
program hello
    ! A simple example program
    use, intrinsic :: iso_fortran_env, only: output_unit, &
                                             input_unit
    implicit none
    character(len=1024) :: who
    write(output_unit, *) "Who is this?"
    read(input_unit, *) who
    write(output_unit, *) "Hello ", trim(who)
end program hello
    \end{lstlisting}
\end{frame}
\end{document}