usepackage{fancyhdr}
usepackage[pdftex]{graphicx}
usepackage{graphicx}
usepackage{multicol}
usepackage{hyperref}
usepackage{amsfonts}
usepackage{amssymb, latexsym}
usepackage{graphics}
usepackage{graphicx

includegraphics[width=10cm]{test.jpeg}

begin{figure}
includegraphics[width=10cm]{test.jpeg}
caption{Swap generator}
end{figure}