Debugging Question:

What is the output of this program no 9?
#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>

int main()
{
struct sockaddr_in addr;
int fd;
fd = socket(AF_INET,SOCK_STREAM,0);
printf("%dn",fd);
return 0;
}
a) -1
b) 3
c) error
d) none of the mentioned

Answer:

c) error
Explanation:
The header file netinet/in.h is required to use the structure sockaddr_in.
Output:
[root@localhost google]# gcc -o san san.c
san.c: In function 'main':
san.c:7:21: error: storage size of 'addr' isn't known
[root@localhost google]#

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The execution of the program in GDB can be affected by:
a) arguments
b) working directory
c) environment
d) all of the mentioned

What is the output of this program?

#include<stdio.h>
#include<stdlib.h>
#include<netinet/in.h>
#include<sys/types.h>
#include<sys/socket.h>

int main()
{
int fd_server, fd_client, len, len_client;
struct sockaddr_in add_server, add_client;
char buff[10];
fd_server = socket(AF_INET,SOCK_STREAM,0);
if (fd_server == -1){
perror("fd_sock");
exit(1);
}
len = sizeof(add_server);
len_client = sizeof(add_client);
if( bind(fd_server,(struct sockaddr*)&add_server,len) != 0)
perror("bind");
fd_client = accept(fd_server,(struct sockaddr*)&add_client,len_client);
if(fd_client == -1)
perror("accept");
read(fd_client,buff,10);
return 0;
}
a) segmentation fault
b) error at the time of compilation
c) syntax error
d) none of the mentioned

Debugging Question:

What is the output of this program no 9? #include<stdio.h> #include<sys/types.h> #include<sys/socket.h> int main() { struct sockaddr_in addr; int fd; fd = socket(AF_INET,SOCK_STREAM,0); printf("%dn",fd); return 0; } a) -1 b) 3 c) error d) none of the mentioned

Answer:

What is the output of this program no 9?
#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>

int main()
{
struct sockaddr_in addr;
int fd;
fd = socket(AF_INET,SOCK_STREAM,0);
printf("%dn",fd);
return 0;
}
a) -1
b) 3
c) error
d) none of the mentioned