Debugging Question: Download Linux Debugging PDF

What is the output of this program?

#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>

int main()
{
int fd;
fd = socket(AF_UNIX,SOCK_STREAM,0);
printf("%dn",fd);
return 0;
}
a) 0
b) 1
c) 2
d) 3

Answer:

d) 3
Explanation:
The socket() returns the lowest available file descriptor and in this program i.e. 3.
Output:
[root@localhost google]# gcc -o san san.c
[root@localhost google]# ./san
3
[root@localhost google]#

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Debugging Question: Download Linux Debugging PDF

What is the output of this program? #include<stdio.h> #include<sys/types.h> #include<sys/socket.h> int main() { int fd; fd = socket(AF_UNIX,SOCK_STREAM,0); printf("%dn",fd); return 0; } a) 0 b) 1 c) 2 d) 3

Answer:

What is the output of this program?

#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>

int main()
{
int fd;
fd = socket(AF_UNIX,SOCK_STREAM,0);
printf("%dn",fd);
return 0;
}
a) 0
b) 1
c) 2
d) 3