diff --git a/Topic-2/child_functions.c b/Topic-2/child_functions.c
index 0567e49..fbcd2d4 100644
--- a/Topic-2/child_functions.c
+++ b/Topic-2/child_functions.c
@@ -1,5 +1,5 @@
 //
-// Wrote for Computer Networks and Systems lab classes
+// Written for Computer Networks and Systems lab classes
 // AUTHOR : Sergiusz Warga
 
 void child_task() {
diff --git a/Topic-2/child_functions.h b/Topic-2/child_functions.h
index bcbaacd..e4fae98 100644
--- a/Topic-2/child_functions.h
+++ b/Topic-2/child_functions.h
@@ -1,5 +1,5 @@
 //
-// Wrote for Computer Networks and Systems lab classes
+// Written for Computer Networks and Systems lab classes
 // AUTHOR : Sergiusz Warga
 
 #ifndef AAE_CNAS_LABS_CHILD_FUNCTIONS_H
diff --git a/Topic-2/task_2_1.c b/Topic-2/task_2_1.c
index 55e7df8..596fb64 100644
--- a/Topic-2/task_2_1.c
+++ b/Topic-2/task_2_1.c
@@ -1,5 +1,5 @@
 //
-// Wrote for Computer Networks and Systems lab classes
+// Written for Computer Networks and Systems lab classes
 // AUTHOR : Sergiusz Warga
 
 #include <stdio.h>
diff --git a/Topic-2/task_2_2.c b/Topic-2/task_2_2.c
index 5f5d4ff..0803099 100644
--- a/Topic-2/task_2_2.c
+++ b/Topic-2/task_2_2.c
@@ -1,5 +1,5 @@
 //
-// Wrote for Computer Networks and Systems lab classes
+// Written for Computer Networks and Systems lab classes
 // AUTHOR : Sergiusz Warga
 
 #include <stdio.h>
diff --git a/Topic-2/task_2_3.c b/Topic-2/task_2_3.c
index ceea33c..ab0f5f5 100644
--- a/Topic-2/task_2_3.c
+++ b/Topic-2/task_2_3.c
@@ -1,5 +1,5 @@
 //
-// Wrote for Computer Networks and Systems lab classes
+// Written for Computer Networks and Systems lab classes
 // AUTHOR : Sergiusz Warga
 
 #include <stdio.h>
diff --git a/Topic-2/task_2_4.c b/Topic-2/task_2_4.c
index d4e233f..74b2bb8 100644
--- a/Topic-2/task_2_4.c
+++ b/Topic-2/task_2_4.c
@@ -1,5 +1,5 @@
 //
-// Wrote for Computer Networks and Systems lab classes
+// Written for Computer Networks and Systems lab classes
 // AUTHOR : Sergiusz Warga
 
 #include <stdio.h>
@@ -10,7 +10,7 @@
 #include <signal.h>
 #include <time.h>
 
-const char * time_from_main_exec() {
+const char * get_timestamp() {
     struct timeval now;
     gettimeofday(&now, NULL);
     char buff[127];
@@ -27,12 +27,16 @@ void parent_before_child() {
         exit(EXIT_FAILURE);
     }
     if (pid != 0) {     // If this is a parent process.
-        printf("===\n%s\nI am a parent.\nMy PID is: %d\n===", time_from_main_exec(), getpid());
+        printf("===\n%s\nI am a parent.\nMy PID is: %d\n===", get_timestamp(), getpid());
+        sleep(1);
         kill(getpid(), SIGTERM);
     } else {
+        printf("===\n%s\nI am a child.\nMy PID is: %d\nMy PPID is: %d\n===", get_timestamp(), getpid(), getppid());
         sleep(1);
-        printf("===\n%s\nI am a child.\nMy PID is: %d\n===", time_from_main_exec(), getpid()); // This line will not be printed, as (usually) parent process will finish
-        // its execution in less than 1 second
+        printf("===\n%s\nI am a child.\nMy PID is: %d\nMy PPID is: %d\n===", get_timestamp(), getpid(), getppid());
+        sleep(1);
+        printf("===\n%s\nI am a child.\nMy PID is: %d\nMy PPID is: %d\n===", get_timestamp(), getpid(), getppid());
+        // When parent is killed PPID of its child process becomes 1 (and so the init process becomes a new parent).
     }
 }
 
@@ -46,29 +50,33 @@ void child_before_parent() {
         exit(EXIT_FAILURE);
     }
     if (pid == 0) {     // If this is a parent process.
-        printf("===\n%s\nI am a child.\nMy PID is: %d\n===", time_from_main_exec(), getpid());
+        printf("===\n%s\nI am a child.\nMy PID is: %d\nMy PPID is: %d\n===", get_timestamp(), getpid(), getppid());
+        sleep(1);
         kill(getpid(), SIGTERM);
     } else {
+        printf("===\n%s\nI am a parent.\nMy PID is: %d\n===", get_timestamp(), getpid());
         sleep(1);
-        printf("===\n%s\nI am a parent.\nMy PID is: %d\n===", time_from_main_exec(), getpid());
+        printf("===\n%s\nI am a parent.\nMy PID is: %d\n===", get_timestamp(), getpid());
+        sleep(1);
+        printf("===\n%s\nI am a parent.\nMy PID is: %d\n===", get_timestamp(), getpid());
     }
 }
 
 
 int main() {
-    
+    int status;
     pid_t pid;
-    printf("%s: Grandparent process has PID: %d\n", time_from_main_exec(), getpid());
+    printf("%s: Grandparent process has PID: %d\n", get_timestamp(), getpid());
     pid = fork();
     if (pid == 0) { // If child process
-        printf("%s: Process with PID %d will execute funs.\n", time_from_main_exec(), getpid());
+        printf("%s: Process with PID %d will execute funs.\n", get_timestamp(), getpid());
         child_before_parent();
-        sleep(1);
-        parent_before_child();
-        sleep(1);
-    } else {        // If parent process
-        printf("%s: Grandparent's child process has PID: %d\n", time_from_main_exec(), pid);
         sleep(5);
+        parent_before_child();
+        sleep(5);
+    } else {        // If parent process
+        printf("%s: Grandparent's child process has PID: %d\n", get_timestamp(), pid);
+        sleep(12);
     }
     return 0;
 }
\ No newline at end of file