# Side-by-side images in LaTeX

I need to put 2 figures side by side in LaTeX where the first figure needs to be given a caption and the second must not be given a caption. I have tried the following:

\usepackage{floatrow}

\begin{figure}[!h]
\begin{floatrow}
\ffigbox{\includegraphics[scale = 0.8]{Figure3}}{\caption{PTST based on total duration}\label{case1}}
\ffigbox{\includegraphics[scale = 0.8]{app1}}{\caption{A zoom}\label{zoom}}
\end{floatrow}
\end{figure}


but I am getting the error do not use float package with float row since I also have \usepackage{float} for other images (I need this).

You can use the subcaption package.

Try something like this.

\documentclass{article}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{subcaption}

\begin{document}
\begin{figure}
\centering
\begin{subfigure}{0.49\textwidth}
\centering
\includegraphics[width = \textwidth]{tikzexample2.png}
\caption{Left figure}
\label{fig:left}
\end{subfigure}
\begin{subfigure}{0.49\textwidth}
\centering
\includegraphics[width = \textwidth]{tikzexample2.png}
\caption{Right figure}
\label{fig:right}
\end{subfigure}
\caption{Combined figure}
\label{fig:combined}
\end{figure}
\end{document}


It yields the following output.

May be is not what you wanted (since you have accepted a answer with two subcaptions) but is what your asked ("the second must not be given a caption"):

\documentclass{article}
\usepackage{graphicx,lipsum}
\begin{document}
\lipsum[2]

\begin{figure}[h] % Do not use only [h] in real documents.
\begin{minipage}[t]{.45\linewidth}
\includegraphics[width=\linewidth]{example-image-a}
\caption{ figure}
\end{minipage}\hfill
\begin{minipage}[b]{.45\linewidth}
\includegraphics[width=\linewidth]{example-image-b}
\end{minipage}
\end{figure}
\lipsum[3]

\end{document}