What is the output of this program?
#include<stdio.h>
#include<fcntl.h>
#include<sys/stat.h>
#include<sys/mman.h>
int main()
{
int s_id;
s_id = shm_open("shared_mem",O_CREAT|O_RDWR,0666);
printf("%d\n",s_id);
if(shm_unlink("shared_mem") == -1)
perror("shm_unlink");
return 0;
}
#include<stdio.h>
#include<fcntl.h>
#include<sys/stat.h>
#include<sys/mman.h>
int main()
{
int s_id;
s_id = shm_open("shared_mem",O_CREAT|O_RDWR,0666);
printf("%d\n",s_id);
if(shm_unlink("shared_mem") == -1)
perror("shm_unlink");
return 0;
}A. -1
B. 1
C. 2
D. 3
Answer: Option D
This Question Belongs to Computer Science >> Linux
Related Questions on Linux
What command is used to count the total number of lines, words, and characters contained in a file?
A. countw
B. wcount
C. wc
D. count p
E. None of the above
What command is used with vi editor to delete a single character?
A. x
B. y
C. a
D. z
E. None of the above
Join The Discussion