Thanks for your post, can anyone post some books describing some valuable function list of C language which are more close to hardware
I learned C in 1987. It's use has changed a lot since then. I am still using it but with 25+ year old technology, as a customized "runner" for Informix 4GL applications.
Depending on what you want to do with C, you might want to look at books on embedded applications, Linux kernel, and so on. Also, check with colleges and universities to see what books they prefer.