Linux Debugging Interview Question:

What is the output of this program?
#include<stdio.h>
#include<sys/socket.h>
int main()
{
int ret;
ret = shutdown(0,0);
printf("%dn",ret);
return 0;
}
a) 0
b) -1
c) can not be determined
d) none of the mentioned

Submitted by: Murtaza

b) -1
Explanation:
The shutdown() is used to close a socket and the first argument in shutdown() is socket.
Output:
[root@localhost google]# gcc -o san san.c
[root@localhost google]# ./san
-1
[root@localhost google]#
Submitted by: Murtaza