Programming

Hi,
Has anyone used gcc compiler and know alot about it? I am compiling a file with:
gcc -o xyz xyz.c abc.o -lsocket -lnsl
it compiles pretty fine.

But whe I use switches
gcc -o -Wall -pedantic -ansi xyz xyz.c abc.o -lsocket -lnsl
it starts giving illogical, rather I should say stupid errors.

Example:
int up_time; // ofcourse, up time of client
On this line it gives error: parse error before '/' token

Example2:
struct sockaddr_in servaddr;
....
....
bzero(servaddr,sizeof(servaddr));

it gives error on second of the above lines:
'servaddr' undeclared (first use in this function)


Any idea what can be the reason?

My problem is solved. Actually, I was doing a silly mistake. I was giving double slashes for commetn, a C++ style of giving comments // which is not allowed in C.