\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
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\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{Lipsum}
\pdfinfo{
  /Title (c-weeks-6-9.pdf)
  /Creator (Cheatography)
  /Author (Lipsum)
  /Subject (C++ (Weeks 6–9) Cheat Sheet)
}

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% 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
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\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\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++ (Weeks 6–9) Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Lipsum} via \textcolor{DarkBackground}{\uline{cheatography.com/151963/cs/40909/}}}
\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}Lipsum \\
  \uline{cheatography.com/lipsum} \\
  \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 19th October, 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*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Functions}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{// Function declaration \newline return\_type \seqsplit{function\_name(parameters);} \newline  \newline // Function definition \newline return\_type \seqsplit{function\_name(parameters)} \{ \newline     // Function body \newline     // Code here \newline     return result; // Optional \newline \}} \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}{Search Algorithms}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Linear Search:}} \{\{nl\}\}Linear search is a simple algorithm that scans through an array one element at a time, comparing each element with the target value. It continues this process until it finds the target or reaches the end of the array. Linear search is straightforward but not the most efficient for large datasets.} \tn 
% Row Count 7 (+ 7)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Binary Search:}} \{\{nl\}\}Binary search works on a sorted array and follows a divide-and-conquer approach. It starts with the middle element and compares it to the target. If they match, the search is successful. If the target is smaller, it repeats the process on the left half of the array; if the target is larger, it looks in the right half. This process continues until the target is found or the search range becomes empty.} \tn 
% Row Count 16 (+ 9)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Sorting Algorithms}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Bubble Sort:}} Bubble sort repeatedly steps through the list, compares adjacent elements, and swaps them if they are in the wrong order. It continues to do this until no more swaps are needed, indicating that the list is sorted. Bubble sort has poor performance for large lists and is mainly used for educational purposes.} \tn 
% Row Count 7 (+ 7)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Selection Sort:}} Selection sort divides the list into a sorted and an unsorted region. It repeatedly selects the minimum element from the unsorted region and moves it to the end of the sorted region. The process continues until the entire list is sorted.} \tn 
% Row Count 13 (+ 6)
\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{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{// Declare an array \newline data\_type array\_name{[}size{]}; \newline  \newline // Initialize an array \newline data\_type array\_name{[}{]} = \{value1, value2, value3\}; \newline  \newline // Access elements \newline element = array\_name{[}index{]}; \newline  \newline // Modify elements \newline array\_name{[}index{]} = new\_value;} \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}{References}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{// Declare a reference \newline data\_type\& reference\_name = original\_variable; \newline  \newline // Use reference \newline reference\_name = new\_value; // Modifies the original variable} \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}{Pointers}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{// Declare a pointer \newline data\_type{\emph{ pointer\_name; \newline  \newline // Initialize pointer \newline pointer\_name = \&variable; \newline  \newline // Dereference pointer \newline value = }}pointer\_name; \newline  \newline // Pointer arithmetic \newline pointer\_name++; // Moves to the next element \newline  \newline // Dynamic memory allocation \newline data\_type* dynamic\_ptr = new data\_type; \newline delete dynamic\_ptr; // Release memory} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Structures}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{// Declare a structure \newline struct StructName \{ \newline     data\_type member1; \newline     data\_type member2; \newline     // ... \newline \}; \newline  \newline // Create an instance \newline StructName instance\_name; \newline  \newline // Access members \newline instance\_name.member1 = value; \newline  \newline // Nested structures \newline struct NestedStruct \{ \newline     int inner\_member; \newline \}; \newline  \newline struct OuterStruct \{ \newline     int outer\_member; \newline     NestedStruct nested; \newline \};} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}