diff --git a/main/main.cpp b/main/main.cpp
index 33b3f4e..752fcef 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -3,20 +3,22 @@
 #include "../src/SharedMemory.h"
 #include <sys/shm.h>
 #include <iostream>
-#include "vkvm.h"
+#include "vkvm.hpp"
 
 
 int main(int argc, char** argv) {
-    initialize(0);
+    vkvm::initialize(0);
     initSharedMemory();
     struct sigaction sigIntHandler;
     sigIntHandler.sa_handler = deleteSharedMemory;
     sigemptyset(&sigIntHandler.sa_mask);
     sigIntHandler.sa_flags = 0;
     sigaction(SIGINT, &sigIntHandler, nullptr);
-    setDefaultValues();
+    vkvm::setDefaultValues();
     std::atexit(deleteSharedMemory);
     std::string eingabe;
+
+
     while(eingabe != "exit") {
         std::cout << "cmd#  ";
         std::cin >>  eingabe;
@@ -24,7 +26,7 @@ int main(int argc, char** argv) {
        if(eingabe == "info")
        {
            std::cout << "OUTPUT ------------------------ OUTPUT\n" << std::endl;
-           std::cout << "memory ID: " << shmget(impl.sharedMemoryKey, 0, 0) << std::endl;
+           std::cout << "memory ID: " << shmget(vkvm::impl.sharedMemoryKey, 0, 0) << std::endl;
            std::cout << "Max memory Size: " << Max_Memory_Size << std::endl;
            std::cout << "OUTPUT ------------------------ OUTPUT\n" << std::endl;
            //Memory that is used now
@@ -32,7 +34,7 @@ int main(int argc, char** argv) {
        } else if(eingabe == "write") {
             std::cout << "text: ";
             std::cin >>  eingabe;
-            setText(eingabe);
+            vkvm::setText(eingabe);
             //write a bitMap for example 2 (width) * 2 (high) * 3 (color) in Schared Memory
             /*
             char bitMap[12] = {0};
@@ -41,7 +43,7 @@ int main(int argc, char** argv) {
             writeSharedMemory(bitMap, sizeof(bitMap),1);
              */
         } else if(eingabe == "read") {
-            auto str = getText();
+            auto str = vkvm::getText();
             std::cout << str << std::endl;
             /*
             char content[12] = {0};
diff --git a/src/SharedMemory.cpp b/src/SharedMemory.cpp
index ff81723..558c602 100644
--- a/src/SharedMemory.cpp
+++ b/src/SharedMemory.cpp
@@ -34,16 +34,16 @@ std::string getAnswerFromUser()
 
 
 void initSharedMemory(void) {
-    if(impl.sharedMemoryKey != key_t(0)) {
-        if (shmget(impl.sharedMemoryKey, Max_Memory_Size, IPC_CREAT | IPC_EXCL | 0666) < 0)
+    if(vkvm::impl.sharedMemoryKey != key_t(0)) {
+        if (shmget(vkvm::impl.sharedMemoryKey, Max_Memory_Size, IPC_CREAT | IPC_EXCL | 0666) < 0)
         {
-            std::cout << "Shared Memory with Key: " << impl.sharedMemoryKey << " is already in use\n"
+            std::cout << "Shared Memory with Key: " << vkvm::impl.sharedMemoryKey << " is already in use\n"
             <<"You can change the Key( type -> y or n ), or you can override the shared memory Segment(type -> override)\n";
             std::string answer = getAnswerFromUser();
             if(answer.compare("y") == 0)
             {
-                impl.sharedMemoryKey = changedKey();
-                std::cout << "new Try with Key:c " << impl.sharedMemoryKey << std::endl;
+                vkvm::impl.sharedMemoryKey = changedKey();
+                std::cout << "new Try with Key:c " << vkvm::impl.sharedMemoryKey << std::endl;
                 initSharedMemory();
             } else if(answer.compare("n") == 0) {
                 std::cout << "This will end shared memory" <<std::endl;
@@ -53,11 +53,11 @@ void initSharedMemory(void) {
                 initSharedMemory();
             }
         } else {
-            std::cout << "Shared Memory is (Re-) allocated with Key: " << impl.sharedMemoryKey << std::endl;
+            std::cout << "Shared Memory is (Re-) allocated with Key: " << vkvm::impl.sharedMemoryKey << std::endl;
         }
     } else {
-        std::cerr <<"key -> " << impl.sharedMemoryKey << " is not allowed here " << std::endl;
-        impl.sharedMemoryKey = changedKey();
+        std::cerr <<"key -> " << vkvm::impl.sharedMemoryKey << " is not allowed here " << std::endl;
+        vkvm::impl.sharedMemoryKey = changedKey();
         initSharedMemory();
     }
 }
@@ -65,7 +65,7 @@ void initSharedMemory(void) {
 void deleteSharedMemory(int s)
 {
     std::cerr << "programm ended with Code: " << s << std::endl;
-    if (shmctl(shmget(impl.sharedMemoryKey, 0, 0), IPC_RMID, 0) < 0 )
+    if (shmctl(shmget(vkvm::impl.sharedMemoryKey, 0, 0), IPC_RMID, 0) < 0 )
     {
         std::cerr << "Failed to remove shared Memory, maybe not existing: try cmd: ipcs, then delete with ipcrm -m $memID " << std::endl;
     } else {
@@ -75,7 +75,7 @@ void deleteSharedMemory(int s)
 
 void deleteSharedMemory(void)
 {
-    if (shmctl(shmget(impl.sharedMemoryKey, 0, 0), IPC_RMID, 0) < 0 )
+    if (shmctl(shmget(vkvm::impl.sharedMemoryKey, 0, 0), IPC_RMID, 0) < 0 )
     {
         std::cerr << "Failed to remove shared Memory, maybe not existing: try cmd: ipcs " << std::endl;
     } else {
diff --git a/src/SharedMemory.h b/src/SharedMemory.h
index 344aacc..26a4d1d 100644
--- a/src/SharedMemory.h
+++ b/src/SharedMemory.h
@@ -2,7 +2,7 @@
 #define SHARED_MEMORY_H
 #include <sys/shm.h>
 #include <iostream>
-#include "internal.h"
+#include "internal.hpp"
 
 //ID-Speicherbereich
 //Größe des Speicherbereichs hier 8MB (8000)