table of contents in latex code example

Example 1: latex table of contents

\tableofcontents

Example 2: table in latex

\begin{tabular}{ |p{3cm}||p{3cm}|p{3cm}|p{3cm}|  }
 \hline
 \multicolumn{4}{|c|}{Country List} \\
 \hline
 Country Name     or Area Name& ISO ALPHA 2 Code &ISO ALPHA 3 Code&ISO numeric Code\\
 \hline
 Afghanistan   & AF    &AFG&   004\\
 Aland Islands&   AX  & ALA   &248\\
 Albania &AL & ALB&  008\\
 Algeria    &DZ & DZA&  012\\
 American Samoa&   AS  & ASM&016\\
 Andorra& AD  & AND   &020\\
 Angola& AO  & AGO&024\\
 \hline
\end{tabular}

Example 3: latex table of contents

\documentclass{article}
\usepackage[utf8]{inputenc}
 
\title{Sections and Chapters}
\author{Gubert Farnsworth}
\date{ }
  
\begin{document}
  
\maketitle
  
\tableofcontents

\section{Introduction}
   
This is the first section.
      
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elit.   Etiam  lobortisfacilisis sem.  Nullam nec mi et 
neque pharetra sollicitudin.  Praesent imperdietmi nec ante. 
Donec ullamcorper, felis non sodales...
       
\addcontentsline{toc}{section}{Unnumbered Section}
\section*{Unnumbered Section}

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sollicitudin.  Praesent imperdiet mi necante...

\section{Second Section}
       
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sollicitudin.  Praesent imperdiet mi necante...
         
\end{document}