#include
#include
#include
#include
int main()
{
pid_t pid, ppid;
gid_t gid;
/* get the process id */
if ((pid = getpid()) < 0) {
perror("
unable to get pid");
} else {
printf("
The process id is %d", pid);
}
/* get the parent process id */
if ((ppid = getppid()) < 0) {
perror("
unable to get the ppid");
} else {
printf("
The parent process id is %d", ppid);
}
/* get the group process id */
if ((gid = getgid()) < 0) {
perror("
unable to get the group id
");
} else {
printf("
The group id is %d
", gid);
}
return(0);
}