How to denote euro(€) symbol in LaTeX?

Euro is official currency of the European Union, denoted by the € symbol. By default \texteuro command is used to represent this symbol in latex.

Symbol	Euro
Type	Currency
Package	textcomp, eurosym, marvosym
Command	\texteuro, \euro, …,etc
Example	100\texteuro → 100 €

\documentclass{article}
\begin{document}
  \texteuro \\
  100\texteuro 
\end{document}

Output :

However, the textcomp package contains the same command \texteuro.

\documentclass{article}
\usepackage{textcomp}
\begin{document}
  \texteuro \\
  500\texteuro 
\end{document}

Output :

Eurosym package in LaTeX

In Latex, special eurosym packages have been defined for the Euro symbol that contains multiple commands.

\documentclass{article}
\usepackage{eurosym}
\begin{document}
  100 \euro \\
  150 \geneuro \\
  120 \geneuronarrow \\
  180 \geneurowide \\
  200 \officialeuro
\end{document}

Output :

And among the multiple commands in eurosym package, using the \euro command is best practice.

Marvosym package in LaTeX

The marvosym package also has multiple commands with multiple fonts to define the Euro symbol. However, there will be slight morphological differences between the symbols according to the different fonts.

Fonts	Command
Courier	\EURcr
Helvetica	\EURhv
Times	\EURtm

\documentclass{article}
\usepackage{marvosym}
\begin{document}
  1.Normal font $\rightarrow$ 100 \EUR \\
  2.Courier font $\rightarrow$ 100 \EURcr \\
  3.Helvetica font $\rightarrow$ 100 \EURhv \\
  4.Times font $\rightarrow$ 100 \EURtm 
\end{document}

Output :

Each command is used in text mode to define this symbol. In my opinion, using the default \texteuro command for the euro symbol is a better option.