How to put figures above the text

Question

I am writing my first paper in latex and have problem when I am about to finish the paper i.e. at the end of the paper.

I used the following code and want to display the figures first before the text.

\begin{figure*}[h]
    \centering
    \includegraphics[]{fig5.png}
       \label{fig:my_label}
  \end{figure*}
\begin{figure}[h]
    \centering
    \includegraphics[]{fig6.png}
    Figure 6: title of figure
       \label{fig:my_label}
  \end{figure}
\section{5.Discussion}
In this work, we provided ....... two paragraph I added
then
\section{Conclusion and future work}
In this work, we describe .... two paragraphs

But the problem is that both the figures comes below these texts. I need to put the figures first and then Discussion and conclusion parts to conclude my paper. How can I do that?

Answer 1

You may try this

\documentclass{article}
\usepackage{graphicx}%manage images
\usepackage{multicol}%set multicolumn features in page 
\usepackage{float}%Places the float at precisely the location in the LaTeX code
\begin{document}
\begin{multicols}{2}
\begin{figure}[H]
\centering
\includegraphics[width=3cm, height=2cm]{fig5.png}
  \caption{fig: title of figure}
\end{figure} 
\columnbreak
\begin{figure}[H]
\centering

\includegraphics[width=3cm, height=2cm]{fig6.png}
  \caption{Figure: title of figure}
\end{figure}
\end{multicols}
\section{5.Discussion}
In this work, we provided ....... two paragraph I added
then
\section{Conclusion and future work}
In this work, we describe .... two paragraphs
\end{document}

You can control image width and height using width and height values.

Answer 2

It seems that your question is duplicate to how-to-influence-the-position-of-float-environments. Anyway, due to specific of your question (which is not very clear), some possibilities are summarized below.

In the first, advantage of float environments are that they can float! It is not a sin, if for better looking of document, image is moved after some section title :-).

From use of the figure* environment can be concluded that you use two column article and that you like to span figures over both columns. In this case figure* only supports [tp] (see @John Kormylo comment) and will always appear on the top of the next page (consequently you can float's omit placeholder):

\documentclass[twocolumn]{article}
\usepackage{graphicx}
\usepackage{multicol}
\usepackage{lipsum}
\begin{document}
\lipsum[1-3]
\begin{figure}
\centering
\includegraphics[height=33mm,width=\linewidth]{example-image-A}
  \caption{fig: title of figure}
\end{figure}
\begin{figure}
\centering
\includegraphics[height=33mm,width=\linewidth]{example-image-B}
  \caption{Figure: title of figure}
\end{figure}
\section{Discussion}
\lipsum[4-5]
\section{Conclusion and future work}
\lipsum[6-7]
\end{document}

In the case that you estimate, that at bottom of page is sufficient space, it will be placed here by help of package stfloats:

\documentclass[twocolumn]{article}
\usepackage{graphicx} 
\usepackage{multicol} 
\usepackage{stfloats}   % <---
\usepackage{lipsum}
\begin{document}
\lipsum[1]
\begin{figure}[b]
\centering
\includegraphics[height=33mm,width=\linewidth]{example-image-A}
  \caption{fig: title of figure}
\end{figure}
\begin{figure}[b]
\centering
\includegraphics[height=33mm,width=\linewidth]{example-image-B}
  \caption{Figure: title of figure}
\end{figure}
\lipsum[1-3]
\section{Discussion}
\lipsum[4-5]
\section{Conclusion and future work}
\lipsum[6-7]
\end{document}

As you see, here images are inserted earlier in text that in page is sufficient space for them. This "trick" is handy in the many cases.

However, in the case of use figure, i.e. that images widths are equal to column width, than you can use figure placement specifier for example htb and newer just [h]. In later case can happen that TeX will push figure on the end of document if in text is not enough space at point of insertion.

\documentclass[twocolumn]{article}
\usepackage{graphicx} 
\usepackage{multicol}
\usepackage{lipsum}
\begin{document}
\lipsum[1-6]
\begin{figure}[ht] % <---
\centering
\includegraphics[height=33mm,width=\linewidth]{example-image-A}
  \caption{fig: title of figure}
\end{figure}
\begin{figure}[ht]
\centering
\includegraphics[height=33mm,width=\linewidth]{example-image-B}
  \caption{Figure: title of figure}
\end{figure}
\section{Discussion}
\lipsum[4-5]
\section{Conclusion and future work}
\lipsum[6-7]
\end{document}