Using the Verbatim Environment

LaTeX provides the verbatim environment for displaying code with monospaced font formatting. This enviroment preserves all whitespace and line breaks exactly as entered, while ignoring any LaTeX commands within it.

\documentclass{article}
\begin{document}
\begin{verbatim}
Code within the \texttt{verbatim} environment 
appears exactly as typed, 
with all LaTeX syntax ignored.
\end{verbatim}
\end{document}

The starred variant verbatim* displays spaces as visible characters:

\documentclass{article}
\begin{document}
\begin{verbatim*}
Spaces become visible:   here
and LaTeX commands: \textbf{ignored}
\end{verbatim*}
\end{document}

Syntax Highlighting with Listings Package

Key Configuration Parameters

• Language and Formatting
  • language: Programming language (Python, Java, C++, etc.)
  • basicstyle: Base font style and size
  • keywordstyle: Keyword appearance
  • commentstyle: Comment styling
  • stringstyle: String formatting
• Borders and Background
  • frame: Border type (none, single, box, etc.)
  • backgroundcolor: Background color
  • framerule: Border thickness
  • framesep: Padding between border and code
• Line Numbers and Wrapping
  • numbers: Line number position
  • numberstyle: Line number appearance
  • breaklines: Enable automatic line wrapping
  • breakatwhitespace: Break only at whitespace

Sample Configuration Templates

Template 1: VS Code Light Theme

\documentclass{article}
\usepackage{listings}
\usepackage{xcolor}

\definecolor{codebg}{RGB}{248,248,248}
\definecolor{codefg}{RGB}{0,0,0}
\definecolor{codecomment}{RGB}{0,128,0}
\definecolor{codekeyword}{RGB}{0,0,255}
\definecolor{codestring}{RGB}{163,21,21}

\lstset{
    basicstyle=\ttfamily\small\color{codefg},
    backgroundcolor=\color{codebg},
    keywordstyle=\color{codekeyword},
    commentstyle=\color{codecomment}\itshape,
    stringstyle=\color{codestring},
    numbers=left,
    numberstyle=\tiny\color{gray},
    frame=none,
    breaklines=true,
    tabsize=4
}

\begin{document}
\begin{lstlisting}[language=Python]
def calculate_primes(limit):
    """
    Generate prime numbers up to specified limit
    """
    primes = []
    for num in range(2, limit+1):
        if all(num % i != 0 for i in range(2, int(num**0.5)+1)):
            primes.append(num)
    return primes

# Example usage
prime_numbers = calculate_primes(50)
print(f"Primes: {prime_numbers}")
\end{lstlisting}
\end{document}

Template 2: Basic Highlighting

\lstset{
    language=Python,
    basicstyle=\ttfamily\small,
    keywordstyle=\color{blue},
    commentstyle=\color{green},
    stringstyle=\color{red},
    numbers=left,
    numberstyle=\tiny\color{gray},
    frame=single,
    breaklines=true,
    tabsize=4
}

Algorithm Pseudocode

Use the algorithmic and algorithm packages for pseudocode:

\usepackage{algorithm}
\usepackage{algorithmic}

\begin{algorithm}
\caption{Example Sorting Algorithm}
\begin{algorithmic}[1]
\REQUIRE Input array $A$ of $n$ elements
\ENSURE Sorted array
\FOR{$i \gets 0$ to $n-1$}
    \FOR{$j \gets 0$ to $n-i-2$}
        \IF{$A[j] > A[j+1]$}
            \STATE Swap $A[j]$ and $A[j+1]$
        \ENDIF
    \ENDFOR
\ENDFOR
\RETURN $A$
\end{algorithmic}
\end{algorithm}