diff --git a/02_MENT/Testat/build.sh b/02_MENT/Testat/build.sh
new file mode 100755
index 0000000..7efe4e7
--- /dev/null
+++ b/02_MENT/Testat/build.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+rm *.out
+
+clang++-6.0 -std=c++14 -I../helpers/  -o limits.out limits_println.cpp 
+clang++-6.0 -std=c++14 -I../helpers/  -o println.out printlnDemo.cpp 
+
+clang++-6.0 -std=c++14 main_02_MENT.cpp
+
+./a.out
diff --git a/02_MENT/Testat/main_02_MENT.cpp b/02_MENT/Testat/main_02_MENT.cpp
new file mode 100644
index 0000000..1cead71
--- /dev/null
+++ b/02_MENT/Testat/main_02_MENT.cpp
@@ -0,0 +1,20 @@
+// file: main_02_MENT.cpp
+// THIS IS C++, use clang++
+
+#include <iostream>
+
+#include "../../helpers/println.hpp"
+
+struct PascalString{
+	int length;            // number of chars used
+	char characters[256];  // chars of some character string
+};
+
+int main(int argc, char** argv, char** envp) {
+
+  PascalString s = {3, '1', '0', '0'};
+  PascalString s2 = {4, 'f', 'f', 'f', 'f'};
+  
+  return 0;
+}
+
diff --git a/02_MENT/a.out b/02_MENT/a.out
index 6ce0451..b8a6f54 100755
Binary files a/02_MENT/a.out and b/02_MENT/a.out differ
diff --git a/02_MENT/main_02_MENT.cpp b/02_MENT/main_02_MENT.cpp
index 185eb92..120d199 100644
--- a/02_MENT/main_02_MENT.cpp
+++ b/02_MENT/main_02_MENT.cpp
@@ -32,8 +32,6 @@ int hexStringToInt(PascalString binaryDigits) {
     return returnValue;
 }
 
-
-
 void printPascalString(PascalString s) {
     for(int i = 0; i <= s.length; i++) {
         println(s.characters[i]);
@@ -49,11 +47,49 @@ PascalString intToDual(int n) {
         n = n / 2;
         i--;
     }
-    
-    
     return string;
 }
 
+char intToHexChar(int n) {
+    if(n > 9) {
+        switch(n) {
+            case 10: return 'A'; break;
+            case 11: return 'B'; break;
+            case 12: return 'C'; break;
+            case 13: return 'D'; break;
+            case 14: return 'E'; break;
+            case 15: return 'F'; break;
+            default: return 'X';
+        }
+    }
+    else return n + '0';
+}
+
+PascalString intToHex(int n) {
+    int i = std::to_string(n).length();
+    PascalString string = {i};
+    while(n >= 1) {
+        string.characters[i] = intToHexChar(n % 16);
+        n = n / 16;
+        i--;
+    }
+    return string;
+
+}
+
+PascalString bitwiseDualAnd(PascalString a, PascalString b) {
+    PascalString shortString = a.length < b.length ? a : b;
+    PascalString longString = a.length > b.length ? a : b;
+    PascalString result = {longString.length, '0'};
+    
+    for(int i = longString.length; i >= 0; --i) {
+        if(shortString.characters[i] == '1' && longString.characters[i] == '1') result.characters[i] = '1';
+        else result.characters[i] = '0';
+    }
+    
+    return result;
+}
+
 int main(int argc, char** argv, char** envp) {
 
   PascalString s = {3, '1', '0', '0'};
@@ -75,7 +111,14 @@ int main(int argc, char** argv, char** envp) {
   
   println(controlRegister);
   
-  printPascalString(intToDual(41));
+  println(intToHexChar(6));
+  println(intToHexChar(10));
+  
+  printPascalString(intToDual(4106));
+  printPascalString(intToHex(965));
+  printPascalString(intToHex(1956));
+  
+  printPascalString(bitwiseDualAnd({3, '1', '1', '0'}, {4, '1', '1', '1', '0'}));
   
   return 0;
 }
diff --git a/03_FLOW_a/flow.out b/03_FLOW_a/flow.out
index 9c7cb79..cb7fd54 100755
Binary files a/03_FLOW_a/flow.out and b/03_FLOW_a/flow.out differ
diff --git a/03_FLOW_a/main_mp2_FLOW_a.cpp b/03_FLOW_a/main_mp2_FLOW_a.cpp
index 4811c4c..6ee6c86 100644
--- a/03_FLOW_a/main_mp2_FLOW_a.cpp
+++ b/03_FLOW_a/main_mp2_FLOW_a.cpp
@@ -115,10 +115,12 @@ int func_1(int arg){
   PRINT; return arg * local_1;
 }
 
-
+void modifikation1();
+void modifikation2();
 
 
 int main(int argc, const char * argv[]) {
+    /*
   console.clearScreen();
   
   currentColor = Colors::BLUE;
@@ -146,13 +148,35 @@ int main(int argc, const char * argv[]) {
   currentColor = Colors::MAGENTA;
   test();
   
+  */
+  
+  console.clearScreen();
+  currentColor = Colors::BLUE;
+  modifikation1();
+  currentColor = Colors::RED;
+  modifikation2();
+  
   
   std::string s;
   std::cin >> s;
   
+  
   return 0;
 }
 
+void modifikation1() {
+    INITPRINT("Modifikation 1");
+    PRINT;
+    PRINT;
+    PRINT;
+    PRINT;
+    PRINT;
+}
+
+void modifikation2() {
+    
+}
+
 void printLineNumber(int lineNumber){
   std::string line = std::to_string(lineNumber);
   currentTick++;