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

% Lengths and widths
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\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++ Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{zreich} via \textcolor{DarkBackground}{\uline{cheatography.com/52369/cs/14235/}}}
\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}zreich \\
  \uline{cheatography.com/zreich} \\
  \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 8th January, 2018.\\
   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.

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% Row 1
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% Row 0
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% Row Count 1 (+ 1)
% Row 1
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% Row Count 2 (+ 1)
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% Row Count 4 (+ 2)
% Row 3
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% Row Count 6 (+ 2)
% Row 4
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% Row Count 7 (+ 1)
% Row 5
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% Row Count 8 (+ 1)
% Row 6
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% Row Count 11 (+ 3)
% Row 7
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% Row Count 14 (+ 3)
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% Row 0
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% Row Count 1 (+ 1)
% Row 1
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% Row Count 2 (+ 1)
% Row 2
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% Row Count 3 (+ 1)
% Row 3
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% Row Count 4 (+ 1)
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
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% Row 0
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% Row Count 2 (+ 2)
% Row 1
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% Row 2
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% Row Count 5 (+ 2)
% Row 3
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\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Pointers}}  \tn
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\mymulticolumn{1}{x{5.377cm}}{- Pointer is the memory address of a variable (i.e. int * num\_ptr) \newline % Row Count 2 (+ 2)
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ptr\_a = new (nothrow) int;  \newline % Row Count 11 (+ 1)
if (ptr\_a == NULL) \{ \newline % Row Count 12 (+ 1)
cout \textless{}\textless{} "sorry"; \newline % Row Count 13 (+ 1)
exit(1); \} \textless{}- ptr set to null if allocation fails \newline % Row Count 14 (+ 1)
- array identifiers are pointers  \newline % Row Count 15 (+ 1)
int hours{[}5{]}; \newline % Row Count 16 (+ 1)
int* ptr; \newline % Row Count 17 (+ 1)
ptr = hours; \textless{}- both point to first index \newline % Row Count 18 (+ 1)
- hours{[}1{]} is equivalent to *(hours+1) \newline % Row Count 19 (+ 1)
- char phrase{[}{]} is equivalent to char* phrase \newline % Row Count 20 (+ 1)
int* number\_ptr; \newline % Row Count 21 (+ 1)
number\_ptr = new int{[}10{]} \textless{}- dynamic array \newline % Row Count 22 (+ 1)
delete {[}{]} number\_ptr;% Row Count 23 (+ 1)
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\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

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\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

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% Row 0
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% Row 0
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% Row 1
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% Row 4
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% Row 5
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% Row Count 11 (+ 1)
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int number = 40; \newline % Row Count 2 (+ 1)
char letter = number; \newline % Row Count 3 (+ 1)
char -\textgreater{} int \newline % Row Count 4 (+ 1)
char letter = 'c'; \newline % Row Count 5 (+ 1)
int number = letter; \newline % Row Count 6 (+ 1)
notes: \newline % Row Count 7 (+ 1)
ASCII for 0 = 48 \newline % Row Count 8 (+ 1)
ASCII for space = 32 \newline % Row Count 9 (+ 1)
ASCII for A = 65 \newline % Row Count 10 (+ 1)
ASCII for a = 97% Row Count 11 (+ 1)
} \tn 
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
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\SetRowColor{white}
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- in\_stream.putback(ch) -\textgreater{} puts back in the file but does not alter file \newline % Row Count 12 (+ 2)
- char =  in\_stream.peek() assigns char the next char in file but does not move it forward \newline % Row Count 14 (+ 2)
in\_stream.get(ch) \newline % Row Count 15 (+ 1)
while (! in\_stream.eof()) \{  \newline % Row Count 16 (+ 1)
cout \textless{}\textless{} ch;  \newline % Row Count 17 (+ 1)
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\par\addvspace{1.3em}

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case label1: \newline % Row Count 3 (+ 1)
statement; \newline % Row Count 4 (+ 1)
break; \newline % Row Count 5 (+ 1)
default: \newline % Row Count 6 (+ 1)
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% Row 0
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% Row Count 2 (+ 2)
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% Row Count 4 (+ 2)
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% Row 3
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\par\addvspace{1.3em}

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% Row 0
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% Row Count 1 (+ 1)
% Row 1
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% Row Count 2 (+ 1)
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\par\addvspace{1.3em}

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\mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/zreich_1515368181_Screen Shot 2018-01-07 at 11.35.16 PM.png}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{exe: main.o exe.o \newline (tab) g++ -g main.o exe.o -o exe \newline  \newline main.o: main.cpp exe.h \newline (tab) g++ -Wall -c main.cpp \newline  \newline exe.o: exe.cpp exe.h \newline (tab) g++ -Wall -c exe.cpp}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} p{0.4977 cm} }
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% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{} \tn 
% Row Count 0 (+ 0)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{- out\_stream \textless{}\textless{} 34 \textless{}\textless{} ' ' would result in '3', '4', ' ' as characters in output file \newline  \newline - doing input\_stream \textgreater{}\textgreater{} number would take all characters together until reaching a blank space \newline  \newline - \textgreater{}\textgreater{} skips over blank space no matter the data type}  \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}{Arrays}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{- When declaring a function that passes an array use {[}{]} \newline % Row Count 2 (+ 2)
- When passing actual array to function no need to use {[}{]} \newline % Row Count 4 (+ 2)
- Array parameters are essentially reference parameters but not need to use \& \newline % Row Count 6 (+ 2)
- Pass the size of the array in the function as well \newline % Row Count 8 (+ 2)
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- 2D arrays -\textgreater{} int array\_name{[}row{]}{[}column{]} \newline % Row Count 12 (+ 1)
- function(array{[}{]}{[}column{]})% Row Count 13 (+ 1)
} \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}{Header file (function declarations)}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\#ifndef HEADERNAME\_H \newline \#define HEADERNAME\_H \newline  \newline \#include directives \newline Using directives \newline  \newline statements \newline  \newline \#endif} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Another Makefile}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{OBJ = main.o tube.o helper.o \newline EXE = tube \newline CXX = g++ \newline CXXFLAGS = -Wall -g \newline  \newline \$(EXE): \$(OBJ) \newline    \$(CXX) \$(OBJ) -o \$@ \newline  \newline \%.o: \%.cpp \newline    \$(CXX) \$(CXXFLAGS) -c \$\textless{} \newline  \newline main.o: tube.h \newline  \newline tube.o: tube.h helper.h \newline  \newline helper.o: helper.h \newline  \newline clean: \newline    rm -f \$(OBJ) \$(EXE)} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}