\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{TheAwesomeLoner}
\pdfinfo{
  /Title (c-prog.pdf)
  /Creator (Cheatography)
  /Author (TheAwesomeLoner)
  /Subject (c prog 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}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\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 prog Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{TheAwesomeLoner} via \textcolor{DarkBackground}{\uline{cheatography.com/50336/cs/13897/}}}
\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}TheAwesomeLoner \\
  \uline{cheatography.com/theawesomeloner} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 11th December, 2017.\\
   Updated 11th December, 2017.\\
   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}{p{0.4977 cm} p{0.4977 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{File managment exs}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{} \tn 
% Row Count 0 (+ 0)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{\{ \newline     FILE *fp; \newline     char ch; \newline     fp = fopen("one.txt", "w"); \newline     printf("Enter data..."); \newline     while( (ch = getchar()) != EOF) \{ \newline         putc(ch, fp); \newline     \} \newline     fclose(fp); \newline     fp = fopen("one.txt", "r"); \newline   \newline     while( (ch = getc(fp)! = EOF) \newline     printf("\%c",ch); \newline      \newline     // closing the file pointer \newline     fclose(fp); \newline      \newline     return 0; \newline \}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.59264 cm} x{3.38436 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{stucture}}  \tn
% Row 0
\SetRowColor{LightBackground}
struct Books \{ & struct Books Book1; \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
char  title{[}50{]}; & strcpy( Book2.title, "Telecom Billing"); \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
char  author{[}50{]}; & strcpy \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
char  subject{[}100{]}; & dest − This is the pointer to the destination array where the content is to be copied. \tn 
% Row Count 10 (+ 4)
% Row 4
\SetRowColor{LightBackground}
int   book\_id; & src − This is the string to be copied. \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{\} book;} \tn 
% Row Count 13 (+ 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}{qsort}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{void qsort(void {\emph{base, size\_t nitems, size\_t size, int (}}compar)(const void {\emph{, const void}})) \newline % Row Count 2 (+ 2)
    base − This is the pointer to the first element of the array to be sorted. \newline % Row Count 4 (+ 2)
    nitems − This is the number of elements in the array pointed by base. \newline % Row Count 6 (+ 2)
    size − This is the size in bytes of each element in the array. \newline % Row Count 8 (+ 2)
    compar − This is the function that compares two elements.% Row Count 10 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{File managment functions}}  \tn
% Row 0
\SetRowColor{LightBackground}
fopen()	create a new file or open a existing file & a	opens a text file in append mode \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
fclose()	closes a file & w	opens or create a text file in writing mode. \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
getc()	reads a character from a file & r	opens a text file in reading mode \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{putc()	writes a character to a file} \tn 
% Row Count 9 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{fscanf()	reads a set of data from a file} \tn 
% Row Count 10 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{fprintf()	writes a set of data to a file} \tn 
% Row Count 11 (+ 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}{array search}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{int main() \newline % Row Count 1 (+ 1)
\{ \newline % Row Count 2 (+ 1)
   int array{[}100{]}, search, c, n; \newline % Row Count 3 (+ 1)
   printf("Enter the number of elements in array\textbackslash{}n"); \newline % Row Count 5 (+ 2)
   scanf("\%d",\&n); \newline % Row Count 6 (+ 1)
   printf("Enter \%d integer(s)\textbackslash{}n", n); \newline % Row Count 7 (+ 1)
   for (c = 0; c \textless{} n; c++) \newline % Row Count 8 (+ 1)
      scanf("\%d", \&array{[}c{]}); \newline % Row Count 9 (+ 1)
   printf("Enter the number to search\textbackslash{}n"); \newline % Row Count 10 (+ 1)
   scanf("\%d", \&search); \newline % Row Count 11 (+ 1)
   for (c = 0; c \textless{} n; c++) \newline % Row Count 12 (+ 1)
   \{ \newline % Row Count 13 (+ 1)
      if (array{[}c{]} == search)     /{\emph{ if required element found }}/ \newline % Row Count 15 (+ 2)
      \{ \newline % Row Count 16 (+ 1)
         printf("\%d is present at location \%d.\textbackslash{}n", search, c+1); \newline % Row Count 18 (+ 2)
         break; \newline % Row Count 19 (+ 1)
      \} \newline % Row Count 20 (+ 1)
   \} \newline % Row Count 21 (+ 1)
   if (c == n) \newline % Row Count 22 (+ 1)
      printf("\%d is not present in array.\textbackslash{}n", search); \newline % Row Count 24 (+ 2)
   return 0; \newline % Row Count 25 (+ 1)
\}% Row Count 26 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4577 cm} x{1.92234 cm} x{2.19696 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{c - bits manipulation}}  \tn
% Row 0
\SetRowColor{LightBackground}
\& & Binary AND Operator copies a bit to the result if it exists in both operands. & (A \& B) will give 12 which is 0000 1100 \tn 
% Row Count 5 (+ 5)
% Row 1
\SetRowColor{white}
| & Binary OR Operator copies a bit if it exists in eather operand. & (A | B) will give 61 which is 0011 1101 \tn 
% Row Count 9 (+ 4)
% Row 2
\SetRowColor{LightBackground}
\textasciicircum{} & Binary XOR Operator copies the bit if it is set in one operand but not both. & (A \textasciicircum{} B) will give 49 which is 0011 0001 \tn 
% Row Count 14 (+ 5)
% Row 3
\SetRowColor{white}
\textasciitilde{} & Binary Ones Complement Operator is unary and has the efect of 'flipping' bits. & (\textasciitilde{}A ) will give -60 which is 1100 0011 \tn 
% Row Count 19 (+ 5)
% Row 4
\SetRowColor{LightBackground}
\textless{}\textless{} & Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand. & A \textless{}\textless{} 2 will give 240 which is 1111 0000 \tn 
% Row Count 27 (+ 8)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.53827 cm} x{2.43873 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{char array}}  \tn
% Row 0
\SetRowColor{LightBackground}
char p{[}{]} = "hello" & char *p = "hello" \tn 
% Row Count 1 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}