A problem; what is the difference between signed and unsigned ?

I was looking at the disassembled code of 2 programs compiled with gcc. In one program I initialised an unsigned variable and in the next program I initialised the same variable as signed.

Static and Shared libraries with C

This post explains how to use static and shared libraries with C. My platform is gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5).

Install basic required applications in Ubuntu 10.04 LTS - Lucid Lynx

LTS means long term support. So this version of Ubuntu is  a nice flavor. But the main problem with open source OS is it will be just an OS without the some good applications.