printf("Process ID:%ld\n",my_pid);
printf("Parent ID:%ld\n",parent_pid);
printf("User ID:%ld\n",my_uid);
printf("Effective User ID:%ld\n",my_euid);
printf("Group ID:%ld\n",my_gid);
printf("Effective Group ID:%ld\n",my_egid):
if(my_info)
{
printf("My Login Name:%s\n" ,my_info->pw_name);
printf("My Password :%s\n" ,my_info->pw_passwd);
printf("My User ID :%ld\n",my_info->pw_uid);
printf("My Group ID :%ld\n",my_info->pw_gid);
printf("My Real Name:%s\n" ,my_info->pw_gecos);
printf("My Home Dir :%s\n", my_info->pw_dir);
printf("My Work Shell:%s\n", my_info->pw_shell);
}
}
printf("This will demostrate how to get child status\n");
if((child=fork())==-1)
{
printf("Fork Error :%s\n",strerror(errno));
exit(1);
}
else if(child==0)
{
int i;
printf("I am the child:%ld\n",getpid());
for(i=0;i<1000000;i++) sin(i);
i=5;
printf("I exit with %d\n",i);
exit(i);
}
while(((child=wait(&status))==-1)&(errno==EINTR));
if(child==-1)
printf("Wait Error:%s\n",strerror(errno));
else if(!status)
printf("Child %ld terminated normally return status is zero\n",
child);
else if(WIFEXITED(status))
printf("Child %ld terminated normally return status is %d\n",
child,WEXITSTATUS(status));
else if(WIFSIGNALED(status))
printf("Child %ld terminated due to signal %d znot caught\n",
child,WTERMSIG(status));
}