I have not c compile environment ,i can download it but it ends with *.gz,so i can't

Applications Programming
1

I need for help .

2

Well, assuming by your nickname, you are using some form of SunOS, such as Solaris. If so, check out www.sunfreeware.com for gzip and gcc. Solaris 8 comes with gzip, so if you already have it, just type:
gunzip < filename >

If you're on another system, go to gcc.gnu.org for gcc. You can also get gzip from gnu.org.

Please post back with more specific information if you are still having a hard time.