Table in LaTeX

Table

In LaTeX we use tabular command to typeset a table. 

\begin{tabular}{...}
......

\end{tabular}

The codes for columns are defined as follows

l left-alignment

r right-alignment

c centre-alignment

| for vertical line

& is used to separate columns

\\  for end of a row
\newline for a new line within a cell 

\hline for a horizontal line.

\cline{i-j} inserts a partial horizontal line between column i and j

Ex. {ll} (i.e. left left ) is used to create 2 columns with left-alignment text without vertical lines , whereas {|l|r|} (i.e. left right )  for 2 columns. The first column is left aligned and second column is right aligned  with vertical lines.

Tabular Code and output 

Ex. 1.

Output Ex. 1

\documentclass[options]{Article}

\begin{document}

\begin{tabular}{|l|r|}

RAM & ROM \\

Printer & Plotter \\

Keyboard & Mouse \\

\end{tabular}

\end{document}

Ex. 2.

Output Ex. 2

\documentclass[options]{Article}

\begin{tabular}{|r|l|}

\hline

One & Two \\

\cline{2-2}

Three & Four \\

\hline \hline

Hello123 & Done \\

\hline

\end{tabular}

\end{document}

Output Ex. 3

Ex. 3.
\documentclass[options]{Article}
\begin{document}
\begin{tabular}{|r|r|r|r|}
\hline
Item & 2012 & 2013 & 2014 \\
\hline
Desktop & 23 & 25 & 26 \\
\hline
Laptop & 53 & 55 & 86 \\
\hline
Monitor & 13 & 85 & 28 \\
\hline
\end{tabular}
\end{document}

Ex. 4.

Output Ex. 4

\documentclass[options]{Article}
\usepackage{multirow}
\begin{document}
\begin{tabular}{l|rrr}
\multicolumn{4}{c}{Table 4}\\
\hline
\multirow{2}{4em}{Item} & \multicolumn{3}{c}{Year} \\
\cline {2-4}
 & 2012 & 2013 & 2014 \\
\hline
Desktop & 23 & 25 & 26 \\
\hline
Laptop & 53 & 55 & 86 \\
\hline
Monitor & 13 & 85 & 28 \\
\end{tabular}

\end{document}