continuation of code 3

server_3.c

@@ -4,6 +4,9 @@
 #include <unistd.h>
 #include <cstring>
 #include <unistd.h> 
+#include <ctime>
+#include <sys/wait.h>
+
 
 volatile bool running = true;
 
@@ -57,6 +60,12 @@ int main(){
         while (running) {
             print_process_info("Parent");
             sleep(1);
+            int status;
+            pid_t result = waitpid(pid, &status, WNOHANG);
+            if (result == pid) {
+                std::cout << "child dead, father stopping" << std::endl;
+                running = false;
+            }
         }
     }
 
@@ -120,5 +129,91 @@ They have the same group id, and they both stop cin CTR+C because they belong to
  and this singal is sent to all the process in the group
 
 
+==============================================================================================================
+
+
+   PPID     PID    PGID     SID TTY        TPGID STAT   UID   TIME COMMAND
+   2344   16628   16628   16628 pts/1      28184 Ss     911   0:02 /bin/zsh -i
+   2344   21290   21290   21290 pts/2      28302 Ss     911   0:00 /bin/zsh -i
+  16628   28184   28184   16628 pts/1      28184 S+     911   0:00 ./a.out
+  28184   28185   28184   16628 pts/1      28184 S+     911   0:00 ./a.out
+  21290   28302   28302   21290 pts/2      28302 R+     911   0:00 ps aj
+
+output:
+58
+Parent | id: 28184
+Parent | father id: 16628
+Parent | groupd id: 28184
+58
+Child | id: 28185
+Child | father id: 28184
+Child | groupd id: 28184
+
+after killing the son:
+36
+Child | id: 28185
+Parent | id: 28184
+Child | father id: 28184
+Child | groupd id: 28184
+Parent | father id: 16628
+5
+Parent | groupd id: 28184
+5
+Child | id: 28185
+Parent | id: 28184
+Child | father id: 28184
+Parent | father id: 16628
+Child | groupd id: 28184
+Parent | groupd id: 28184
+46
+46
+Received signal: 15
+Stopping the program
+finished
+Message during exit
+Parent | id: 28184
+Parent | father id: 16628
+Parent | groupd id: 28184
+29
+
+
+AND
+
+   PPID     PID    PGID     SID TTY        TPGID STAT   UID   TIME COMMAND
+   2344   16628   16628   16628 pts/1      28184 Ss     911   0:02 /bin/zsh -i
+   2344   21290   21290   21290 pts/2      28984 Ss     911   0:00 /bin/zsh -i
+  16628   28184   28184   16628 pts/1      28184 S+     911   0:00 ./a.out
+  28184   28185   28184   16628 pts/1      28184 Z+     911   0:00 [a.out] <defunct>
+  21290   28984   28984   21290 pts/2      28984 R+     911   0:00 ps aj
+
+
+the child continous there, but has a <defunct>
+
+after killing first the parent:
+
+   PPID     PID    PGID     SID TTY        TPGID STAT   UID   TIME COMMAND
+   2344   16628   16628   16628 pts/1      16628 Ss+    911   0:02 /bin/zsh -i
+   2344   21290   21290   21290 pts/2      30012 Ss     911   0:01 /bin/zsh -i
+      1   29861   29860   16628 pts/1      16628 S      911   0:00 ./a.out
+  21290   30012   30012   21290 pts/2      30012 R+     911   0:00 ps aj
+
+the child continous to be running
+
+If first I kill the child and then the father, both of them will desapear
+
+
+After killing first the child:
+Child | groupd id: 31529
+29
+Received signal: 15
+Stopping the program
+finished
+Message during exit
+child dead, father stopping
+finished
+Message during exit
+
+
+
 
 */
\ No newline at end of file