How can I use natbib package with ieeeconf style [closed]

Question

I want to use ieeeconf as document class and include natbib package.

\documentclass[a4paper, 10pt, conference]{ieeeconf} 
\usepackage{natbib}
% something here

\bibliography{reference}

I have provided my references in reference.bib file. but I get error while compiling with pdflatex and TexWorks.

When I exclude the line:

\usepackage{natbib}

I can compile it but what I see in pdf format is:

[Alouani and Rice(1994)]

instead of

[[1]]

In the text where I used \cite{c1}

and:

[Aluni and Rice(1994)] A. T. Alouani and T. R. Rice. On asynchronous data fusion. pages143-146, 1994*

in the reference section. But what I want is to sort them in numbers format.

Here is one of my .bib file's item:

@article{c1,
author = {A. T. Alouani and T. R. Rice},
title = {On asynchronous data fusion},
booktitle = {Southeastern Symposium on System Theory},
year = {1994},
pages = {143--146},
masid = {50009577}
}

Please help me cope with this.