Please follow the instructions given in this wikipedia page.

https://en.wikibooks.org/wiki/LaTeX/Floats,_Figures_and_Captions

1. Your file should be in the same directory of the tex file. If not, specify the full path of the file

2. There should not be any space between fig and 3,

It should be

\includegraphics[width=5.0 in]{fig3}

3. Your file name in the directory and the specified one should match.

4. If you have space in the file which you have saved, rename the file name

5. If you don't like to remove space, include the following package

\usepackage[space]{grffile}

Dear Pramodini S,

   The error in your file is the space between fig and 3, the name of the image file mustn't have any spaces, so rename your figure in its own folder "fig3" and delete space in your latex file, if it is necessary, you can name your image in that form fig_3 in both places in its own folder in your PC and in latex file.

see the attached file, in which I repaired your problem. (I put a temporary Figure from my computer)

Best Luck.

Dear Pramodini ,

I think above two answers will help you to upload the image.Keep all files in one folder only.Dr Mohamed has helped you very well.

All the best

Dear Ellis,

  It is not necessary to include file extension "eps" in latex file if the original figure is already of eps format, the problem was the space in the file name, which is n't allowed.

Best regards. 

thank you all...

Khaled Mohamed sir my problem is still not solved.. i have incorporated all the points u all have mentioned. when i execute my file by writing \usepackage{graphicx}, pdf does not build, its showing pdflatex compilation report (page 0), errors are 0...

when i write some text without including any graphics, it executes and builds pdf..

but when i try to include some figure, it does not build pdf. please help..

should i install any graphics software???

Dear Pramodini,

Are your figures in "eps" format or other format like "jpg" ... etc?

The problem may be the format of your figures differ than "eps" format. If this is the situation, convert it to "eps" format by any software or by online sites like:

http://image.online-convert.com/convert-to-eps

Best Luck

Have you try this? \usepackage[space]{grffile}

First of all, import graphicx package by \usepackage{graphicx}. And try these commands :

\begin{figure}[H]

\includegraphics[scale=1]{name_file.png}

\end{figure}

Be careful with the extension of your file (.png or .jpeg, ...) and your file must be in the same folder with your tex file.

Thanks!

thank u all

I have converted the image in to eps format. but the problem not yet solved..

\documentclass[12pt]{article}

\usepackage{graphicx}

\begin{document}

\begin{figure}

\includegraphicx[width=2cm]{figure.eps}

\caption{abcde.}

\label{Fig:figure1}

\end{figure}

when i run the program, pdf does not build, its showing pdflatex compilation report (page 0), errors are 0.

please help

\documentclass[12pt]{article}

\usepackage[pdftex]{graphicx}

\usepackage{graphics}

\begin{document}

\begin{figure}[h]

\includegraphics[width=15cm]{fig}

\caption{nom of figure}

\end{figure}

\end{document}

 and insert the figure in the build file

Dear Pramodini

  The problem in you code is in the fifth line (I put it in bold format), although we write "graphix" in \usepackage{graphicx} at the beginning of the file, we write it in its original letters in \includegraphics in the block of figure format

so replace (\includegraphicx) by (\includegraphics)

See the attached compiled true format on my PC, you can run it at your PC, if the problem persists I think you have to re-install latex software again.

Best Luck.

\documentclass[12pt]{article}

\usepackage{graphicx}

\begin{document}

\begin{figure}

\includegraphicx[width=2cm]{figure.eps}

\caption{abcde.}

\label{Fig:figure1}

\end{figure}

Dear Ms. Pramodini,

I think you are not able to download the graphicx package. I think you may have to install it manually. You can manually download the package from here https://www.ctan.org/pkg/graphicx (download zip file). And follow this post to install it to your tex system (miktex, in windows) http://tex.stackexchange.com/questions/2063/how-can-i-manually-install-a-package-on-miktex-windows

I think I have solved your problem

\documentclass[12pt]{article}

\usepackage[pdftex]{graphicx}

\usepackage{graphics}

\usepackage{subfigure}

\begin{document}

\begin{figure}[!htb]

\centering

\begin{tabular}{cc}

\subfigure[---]{\label{---}\includegraphics[width=4.5cm,height=4.5cm]{image1.eps}}

\subfigure[---]{\label{---}\includegraphics[width=4.5cm,height=4.5cm]{image2.eps}}

\subfigure[---]{\label{---}\includegraphics[width=4.5cm,height=4.5cm]{image3.eps}}\\

\end{tabular}

\caption{---}\label{---}

\end{figure}

I think  you should save your image file to your  corresponding latex file in the jpeg or png format  and then run your winedit file then only you can get the answer. Dont forget you should both image and latex file in the same folder.

\documentclass{article}

\usepackage{graphicx}

\begin{document}

\begin{figure}

\includegraphics[width=3.0cm]{boat.jpg}

\caption{A boat.}

\label{fig:boat1}

\end{figure}

Figure \ref{fig:boat1} shows a boat.

\end{document}

try like this.

thank you all..

.. now its working..

got result also..