Hackers should atleast 5 programming languages. Before all ,learn c program . Because it is basic programming language for all programming language. It is easy to learn also.
There are many books available to read like Complete reference c, C for dummies.
In online also you can learn. One of best website to learn c program is www.cprogramming.com/
How to compile c program?
Download “Turbo c ” compiler and install. it. :download
Now open the tc.exe in the folder “c:tcbin”
Select New in File Menu of the turbo c editor.
and type your coding .
save it with “.c” extension Like hello.c
Create exe file:
if my post is not clear for you ask me doubts as comment