i want to know the basic of c
Hi, and welcome to TSDN; you posted your question in the C/C++ Articles section.
This sections is for (hopefully?) informative articles only; questions like yours'
should be posted in the C/C++ Forum section. I'll move your question to that
section (see the blue menu bar at the top of the page), where it can be better
answered.
kind regards,
Jos
ps. Find yourself a copy of "The C Programming Languge" second edition by
Brian Kernighan and Dennis Ritchie (and read it please)