documentclass[a4paper]{article}
usepackage{tabularx}
usepackage{minted}
usepackage{fontspec}
setmonofont{ubuntu Mono}
usepackage[a4paper, total={6in, 8in}]{geometry}
%opening
title{texttt{printf} Format String Reference}
date{}
begin{document}
maketitle
section*{Format specifiers}

begin{tabularx}{textwidth}{ |X|X|X| }
  hline
  texttt{%s} & mintinline{c}{printf("Hello %s", "World");} & texttt{Hello World} \
  hline
  texttt{%d}  & mintinline{c}{printf("%d cats", 5);} & texttt{5 cats} \
  hline
end{tabularx}

end{document}

l.20 end{tabularx}

! Package minted Error: Missing Pygments output; inputminted was
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the outputdir package option, or may be using an incompatible build tool.

See the minted package documentation for explanation.
Type  H <return>  for immediate help.
 ...