undefined reference to `main'

["vinod" <vinod.nanjaiah@xxxxxxxxx>]

Hi all :
When I using gcc to compile my code.c to code , I got the error msg as
follows :
/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/crt1.o: In function
`_start':
(.text+0x18): undefined reference to `main'
collect2: ld returned 1 exit status



What can I do now, any suggestion?
Vinod