how to insert a picture in latex code example

Example 1: include picture in latex

\usepackage{graphicx}
\graphicspath{ {./images/} }
\includegraphics{image}

Example 2: how to add image overleaf

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}

\title{A project with images}
\author{Overleaf}
\date{}

\begin{document}

\maketitle

\section{Introduction}
\begin{figure}[htp]
    \centering
    \includegraphics[width=4cm]{InsertingImagesEx5}
    \caption{An image of a galaxy}
    \label{fig:galaxy}
\end{figure}

\end{document}

Example 3: insert figure latex

%...
\begin{figure}[h!]
  \centering
  \begin{subfigure}[b]{0.2\linewidth}
    \includegraphics[width=\linewidth]{coffee.jpg}
     \caption{Coffee.}
  \end{subfigure}
  \begin{subfigure}[b]{0.2\linewidth}
    \includegraphics[width=\linewidth]{coffee.jpg}
    \caption{More coffee.}
  \end{subfigure}
  \begin{subfigure}[b]{0.2\linewidth}
    \includegraphics[width=\linewidth]{coffee.jpg}
    \caption{Tasty coffee.}
  \end{subfigure}
  \begin{subfigure}[b]{0.5\linewidth}
    \includegraphics[width=\linewidth]{coffee.jpg}
    \caption{Too much coffee.}
  \end{subfigure}
  \caption{The same cup of coffee. Multiple times.}
  \label{fig:coffee3}
\end{figure}
%...

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