diff --git a/Makefile b/Makefile
index be89a08..bf71fca 100755
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CC := clang++ -Wall -std=c++17 -Wall -Wextra -O1 -g -fsanitize=address,undefined -fno-omit-frame-pointer
+CC := clang++ -Wall -std=c++17 -Wall -Wextra -g -fsanitize=address,undefined -fno-omit-frame-pointer
 
 setup:
 	mkdir build
@@ -34,6 +34,11 @@ sheet05:
 	chmod +x build/sheet05
 	build/sheet05
 
+sheet06:
+	$(CC) src/sheet06.cpp -o build/sheet06
+	chmod +x build/sheet06
+	build/sheet06
+
 pizza:
 	$(CC) src/pizza.cpp -o build/pizza
 	chmod +x build/pizza
diff --git a/src/sheet04.cpp b/src/sheet04.cpp
index d2ca5ae..2b7e6cd 100755
--- a/src/sheet04.cpp
+++ b/src/sheet04.cpp
@@ -211,7 +211,7 @@ class vec
  int main()
  {
     std::string  ans;
-    std::cout << "y for vector exercies: ";
+    std::cout << "y for vector exercises: ";
     std::cin >> ans;
     if(ans == "y")
     {
diff --git a/src/sheet05.cpp b/src/sheet05.cpp
index a4e5f5a..7a679e9 100755
--- a/src/sheet05.cpp
+++ b/src/sheet05.cpp
@@ -126,25 +126,19 @@ struct Node {
 
 void addElement(Node **head, int data)
 {
-	if(*head == nullptr)
-	{
-		*head = new Node(data);
-		return;
-	}
+	Node **og_head = head;
 
-	Node **next = &(**head).next;
-	do
+	while(*head != nullptr)
 	{
-		*next = (**next).next;
+		head = &(**head).next;
 	}
-	while(*next != nullptr)
-	*next = new Node(data);
+	*head = new Node(data);
+	head  = og_head;
 }
 void printList(const Node *head)
 {
 	std::cout << *head << '\n';
 	Node *next = (*head).next;
-	std::cout << (next != nullptr) << '\n';
 	while(next != nullptr)
 	{
 		std::cout << *next << '\n';
diff --git a/src/sheet06.cpp b/src/sheet06.cpp
new file mode 100644
index 0000000..74a4df9
--- /dev/null
+++ b/src/sheet06.cpp
@@ -0,0 +1,10 @@
+#include<iostream>
+#define MY_ASSERT(BOOL_EXPR, MESSAGE) 
+{
+    if (!BOOL_EXPR)
+    {
+        std::cout << MESSAGE << '\n';
+        std::cout << __FILE__ << '\n';
+        std::cout << __LINE__ << '\n'
+    }
+}
\ No newline at end of file
diff --git a/vgcore.13380 b/vgcore.13380
new file mode 100644
index 0000000..16a6e58
Binary files /dev/null and b/vgcore.13380 differ