How to include many images with a for-loop?

Question

I would like to add many images to my document. The images are located in a folder named ./assets/images/ and are numbered as follows 0.png, 1.png, ..., 100.png. How can I include them using a for-loop in Latex?

At the moment I do the following, which is not very aesthetic:

\begin{figure}
    \centering
    \includegraphics{./assets/images/1.png}
    \includegraphics{./assets/images/2.png}
    \includegraphics{./assets/images/3.png}
    \includegraphics{./assets/images/4.png}
    % and so on
    \caption{}
    \label{}
\end{figure}

Is there a way to do something like this:

\begin{figure}
    \centering
    for image in images:
        \includegraphics{./assets/images/ + image}
    \caption{}
    \label{}
\end{figure}

Answer 1

The pgffor package provides a very simple interface for loops like this. I've made a helper command to change the number of images as you need; this is useful if you're using the same technique multiple times in your document, but you could just as easily hardcode the top value.

Assuming your images are named as in your example.

\documentclass{article}
\usepackage{graphicx}
\usepackage{pgffor}
\newcommand{\setnumimages}[1]{\def\numimages{#1}}
\begin{document}
\setnumimages{5}
\begin{figure}
\foreach \x in {1,...,\numimages}{
    \includegraphics{./assets/images/\x}
}
\end{figure}
\end{document}

Answer 2

my working example :

% mwe.tex 
\documentclass{article}
\usepackage{pgffor}  
\usepackage{mwe}
\usepackage{graphics}
\begin{document}

\foreach \fig in {a,b,c}%
   {My picture: example-image-\fig \par%
   \includegraphics[width=4cm]{example-image-\fig}%
     \par%
     \vspace{2ex}}
\end{document}