\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{BeckyIndirectlyToo}
\pdfinfo{
  /Title (c-basics.pdf)
  /Creator (Cheatography)
  /Author (BeckyIndirectlyToo)
  /Subject (C Basics Cheat Sheet)
}

% Lengths and widths
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\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{E3A53B}
\definecolor{LightBackground}{HTML}{FDF9F2}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{C Basics Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{BeckyIndirectlyToo} via \textcolor{DarkBackground}{\uline{cheatography.com/192748/cs/40079/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}BeckyIndirectlyToo \\
  \uline{cheatography.com/beckyindirectlytoo} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 31st August, 2023.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{C Program Structure}}  \tn
% Row 0
\SetRowColor{LightBackground}
/* multi-line */ & comment \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
// single-line & comment \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
preprocessing commands & includes header files, define constants and enum \tn 
% Row Count 5 (+ 3)
% Row 3
\SetRowColor{white}
global declarations & declare global variables \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
prototype functions & declare functions under main \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
int main (void) \{\{nl\}\} \{ & start of program execution \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
~ local declarations; \{\{nl\}\} ~ executable statements; & the program \tn 
% Row Count 15 (+ 4)
% Row 7
\SetRowColor{white}
~ return 0; \{\{nl\}\} \} & end of program \tn 
% Row Count 17 (+ 2)
% Row 8
\SetRowColor{LightBackground}
user function() \{\{nl\}\} \{ \{\{nl\}\} ~ function definition; \{\{nl\}\} \} & user defined functions referenced in main \tn 
% Row Count 21 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.116 cm} x{2.508 cm} x{1.976 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{8.4cm}}{\bf\textcolor{white}{C Data Keywords}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Original K\&R Keywords}} & {\bf{C90 K\&R Keywords}} & {\bf{C99 Keywords}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
int & signed & \_Bool \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
long & void & \_Complex \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
short &  & \seqsplit{\_Imaginary} \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{8.4cm}}{unsigned} \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{3}{x{8.4cm}}{char} \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{8.4cm}}{float} \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
\mymulticolumn{3}{x{8.4cm}}{double} \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.36 cm} x{4.64 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{scanf() Specifiers}}  \tn
% Row 0
\SetRowColor{LightBackground}
\%c & character \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\%d & signed decimal integer \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\%e, \%f, \%g, \%a\textasciicircum{}C99\textasciicircum{} & floating-point number \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
\%E, \%F, \%G, \%A\textasciicircum{}C99\textasciicircum{} & floating-point number \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\%i & signed decimal integer \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
\%o & signed octal integer \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\%p & ponter\textasciicircum{}an address\textasciicircum{} \tn 
% Row Count 9 (+ 1)
% Row 7
\SetRowColor{white}
\%s & string\textasciicircum{}1\textasciicircum{} \tn 
% Row Count 10 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\%u & unsigned decimal integer \tn 
% Row Count 12 (+ 2)
% Row 9
\SetRowColor{white}
\%x, \%X & signed hexadecimal integer \tn 
% Row Count 14 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{\textasciicircum{}1\textasciicircum{} begins with first non-whitespace character and ends with the next whitespace character}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{0.8 cm} x{7.2 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{printf() Specifiers}}  \tn
% Row 0
\SetRowColor{LightBackground}
\%a & floating-point number, hexadecimal digit and P-nonation \textasciicircum{}C99/C11\textasciicircum{} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\%A & floating-point number, hexadecimal digit and P-nonation \textasciicircum{}C99/C11\textasciicircum{} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\%c & single character \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
\%d & signed decimal integer \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\%e & floating-point number, exponent is less than -4 or greater than or equal to the precision \tn 
% Row Count 9 (+ 3)
% Row 5
\SetRowColor{white}
\%E & floating-point number, exponent is less than -4 or greater than or equal to the precision \tn 
% Row Count 12 (+ 3)
% Row 6
\SetRowColor{LightBackground}
\%f & floating-point number, decimal notation \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
\%g & use \%f or \%e, depending on the value \tn 
% Row Count 15 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\%G & use \%f or \%E, depending on value \tn 
% Row Count 16 (+ 1)
% Row 9
\SetRowColor{white}
\%i & signed decimal integer \textasciicircum{}same as \%d\textasciicircum{} \tn 
% Row Count 17 (+ 1)
% Row 10
\SetRowColor{LightBackground}
\%o & unsigned octal integer \tn 
% Row Count 18 (+ 1)
% Row 11
\SetRowColor{white}
\%p & pointer \tn 
% Row Count 19 (+ 1)
% Row 12
\SetRowColor{LightBackground}
\%s & character string \tn 
% Row Count 20 (+ 1)
% Row 13
\SetRowColor{white}
\%u & unsigned decimal integer \tn 
% Row Count 21 (+ 1)
% Row 14
\SetRowColor{LightBackground}
\%x & unsigned hex integer, using hex digits 0f \tn 
% Row Count 23 (+ 2)
% Row 15
\SetRowColor{white}
\%X & unsigned hex integer, using hex digits 0F \tn 
% Row Count 25 (+ 2)
% Row 16
\SetRowColor{LightBackground}
\%\% & prints a \% sign \tn 
% Row Count 26 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}