\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{blfrj}
\pdfinfo{
  /Title (c.pdf)
  /Creator (Cheatography)
  /Author (blfrj)
  /Subject (C Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\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}{2D89CF}
\definecolor{LightBackground}{HTML}{F1F7FC}
\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 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{blfrj} via \textcolor{DarkBackground}{\uline{cheatography.com/73472/cs/18520/}}}
\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}blfrj \\
  \uline{cheatography.com/blfrj} \\
  \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 17th January, 2019.\\
   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*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Libs (\#include)}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\{\{ac\}\}\textless{}stdio.h\textgreater{}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{\{\{ac\}\}\textless{}stdlib.h\textgreater{}} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\{\{ac\}\}\textless{}string.h\textgreater{}} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{\{\{ac\}\}\textless{}math.h\textgreater{}} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\{\{ac\}\}\textless{}unistd.h\textgreater{} - {\emph{sleep()}}} \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.44333 cm} x{3.53367 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{I/O}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{FLUSH IN}} & \{\{ac\}\}{\bf{\_\_fpurge}}({\emph{stdin}}) \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
{\bf{FLUSH OUT}} & \{\{ac\}\}{\bf{fflush}}({\emph{stdout}}) \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
{\bf{IN}} & \{\{ac\}\}{\bf{scanf}}("formato", \&var) \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
{\bf{OUT}} & \{\{ac\}\}{\bf{printf}}("string") \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.93643 cm} x{2.04057 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Data}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{(un)signed char}} & \{\{ac\}\}\%c \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{\bf{short}} & \{\{ac\}\}\%hi \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
{\bf{unsigned short}} & \{\{ac\}\}\%hu \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{int}} & \{\{ac\}\}\%i / \%d \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
{\bf{unsigned int}} & \{\{ac\}\}\%u \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
{\bf{long}} & \{\{ac\}\}\%li \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
{\bf{float}} & \{\{ac\}\}\%f \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
{\bf{pointer addr}} & \{\{ac\}\}\%p \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
{\bf{string}} & \{\{ac\}\}\%s \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.64241 cm} x{3.33459 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Format}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{\%{\emph{0.n}}f}} & n decimales \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{\bf{\%{\emph{n}}d}} & Tamaño (espacios pre) \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
{\bf{\%{\emph{0n}}d}} & Tamaño (0 pre) \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Char Array -\textgreater{} String}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{void {\bf{qs}}(char *{\emph{cad}})\{ \newline     {\bf{if}}(cad{[}strlen(cad)-1{]}=='\textbackslash{}n')\{ \newline         cad{[}strlen(cad)-1{]}='\textbackslash{}0'; \newline     \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Strings}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{fgets}}({\emph{str}}, {\emph{size}}, {\emph{stdin}})} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{strlen}}({\emph{str}})} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{strlcpy}}({\emph{dest}}, {\emph{src}}, {\emph{size}})} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{strcmp}}({\emph{str1}}, {\emph{str2}})  {\emph{(M \textless{} m)}}} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{~~~~~~{\bf{\textgreater{} 0}}~~~~{\emph{str1}} \textgreater{} {\emph{str2}}} \tn 
% Row Count 6 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{~~~~~~{\bf{= 0}}~~~~{\emph{str1}} = {\emph{str2}}} \tn 
% Row Count 8 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{~~~~~~{\bf{= 0}}~~~~{\emph{str1}} = {\emph{str2}}} \tn 
% Row Count 10 (+ 2)
% Row 7
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{end:}} "\textbackslash{}0"} \tn 
% Row Count 11 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.63781 cm} x{2.33919 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Pointers}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{declaration}} & \{\{ac\}\}int  *ip; \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{\bf{storing address}} & \{\{ac\}\}ip = \&var; \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
{\bf{ip}} & \{\{ac\}\}bffd8b3c \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{*ip}} & \{\{ac\}\}var (value) \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Files}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{FILE *pointer} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{pointer = {\bf{fopen}}("{\emph{files}}", "{\emph{mode}}")} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{fread}}({\emph{point(O)}}, {\emph{sizeof(varType)}}, 1, {\emph{point(I)}})\{\{nobreak\}\}} \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{fwrite}}({\emph{point(I)}}, {\emph{sizeof(varType)}}, 1, {\emph{point(O)}}) \{\{nobreak\}\}} \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{fseek}}({\emph{pointer}}, {\emph{size}}, {\emph{whence: }})} \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{~ ~ ~ ~ ~ ~{\bf{SEEK\_SET}}~ ~ ~ ~{\emph{Inicio}}} \tn 
% Row Count 9 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{~ ~ ~ ~ ~ ~{\bf{SEEK\_CUR}}~ ~ ~ ~{\emph{Pos actual}}} \tn 
% Row Count 11 (+ 2)
% Row 7
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{~ ~ ~ ~ ~ ~{\bf{SEEK\_END}}~ ~ ~ ~{\emph{Final}}} \tn 
% Row Count 13 (+ 2)
% Row 8
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{fclose}}(pointer)} \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.77809 cm} x{1.51041 cm} x{2.2885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{File Open: mode - operation - exist}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{r}} & {\emph{read}} & N: NULL \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{\bf{w}} & {\emph{write}} & Y: overw N: create \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
{\bf{a}} & {\emph{append}} & N: create \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{r+}} & {\emph{read/write}} & N: NULL \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
{\bf{w+}} & {\emph{read/write}} & Y: overw N: create \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
{\bf{a+}} & {\emph{read/app}} & N: create \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
{\bf{Mb}} & {\emph{binary}} &  \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Reservar Memoria}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{int**}} {\bf{{\emph{reservaMemoria}}}}(int filas, int columnas) \{ \newline     int {\bf{ matriz, i=0; \newline     matriz = (int**) malloc(filas * sizeof (int*)); \newline     for (i = 0; i \textless{} filas; i++)\{ \newline         matriz{[}i{]} = (int*) malloc(columnas * sizeof (int)); \newline     \} \newline     }}return**(matriz); \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Liberar Memoria}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{void}} {\bf{{\emph{liberaMemoria}}}}(int**matriz, int filas)\{ \newline     int i=0; \newline     for(i=0;i\textless{}filas;i++)\{ \newline         free(matriz{[}i{]}); \newline     \} \newline     free(matriz); \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Reservar struct}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{struct struct\_files {\emph{arrayFiles; \newline  \newline {\bf{void reservarStruct}}(int }}nElementos{\emph{, struct struct\_files* }}arrayFiles*)\{ \newline      \newline      arrayFiles = (struct struct\_files*) {\bf{malloc}}({\bf{sizeof}}(struct struct\_files) * nElementos); \newline  \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Liberar struct}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{void liberarStruct}}(struct struct\_files* {\emph{arrayFiles}})\{ \newline      \newline     {\bf{free}}(arrayFiles); \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Open Carefully}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{if}}((salida = {\bf{fopen}}("files.dat", "r+")) == {\emph{NULL}})\{ \newline         salida = {\bf{fopen}}("files.dat","w+"); \newline     \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}