Algorithms

To create algorithms in Latex you can use algorithm2e, algorithmic or Listings environment.

Algorithm2e package

\usepackage[options ]{algorithm2e}

Example

\usepackage[ruled,vlined]{algorithm2e}

...

\begin{algorithm}[H]
\SetAlgoLined
\KwResult{Write here the result }
 initialization\;
 \While{While condition}{
  instructions\;
  \eIf{condition}{
   instructions1\;
   instructions2\;
   }{
   instructions3\;
  }
 }
 \caption{How to write algorithms}
\end{algorithm}

Algorithmic package

\usepackage{algorithmic}

Example

\begin{algorithmic}
\STATE $i\gets 10$
\IF {$i\geq 5$} 
        \STATE $i\gets i-1$
\ELSE
        \IF {$i\leq 3$}
                \STATE $i\gets i+2$
        \ENDIF
\ENDIF 
\end{algorithmic}

Listings package

\usepackage{listings}

After \begin{document} put \lstset{language=Pascal} to set your language. Or You can specify the language while including the file with the following command: \lstinputlisting[language=C]{source.c}

Languages supported

ABAP IDL Plasm ACSL inform POV Ada Java Prolog Algol JVMIS Promela Ant ksh Python Assembler Lisp R Awk Logo Reduce bash make Rexx Basic Mathematica1 RSL C Matlab Ruby C++ Mercury S Caml MetaPost SAS Clean Miranda Scilab Cobol Mizar sh Comal ML SHELXL csh Modula-2 Simula Delphi MuPAD SQL Eiffel NASTRAN tcl Elan Oberon-2 TeX erlang OCL VBScript Euphoria Octave Verilog Fortran Oz VHDL GCL Pascal VRML Gnuplot Perl XML Haskell PHP XSLT HTML PL/I

Example :

\lstinputlisting[language=c]{c.c}

Line numbers are available for all displayed listings, e.g. tiny numbers on the left, each second line, with 5pt distance to the listing:

\lstset{numbers=left, numberstyle=\tiny, stepnumber=1, numbersep=5pt}