diff --git a/02_MENT/main_02_MENT.cpp b/02_MENT/main_02_MENT.cpp
index e444cf5..20b1e73 100644
--- a/02_MENT/main_02_MENT.cpp
+++ b/02_MENT/main_02_MENT.cpp
@@ -5,29 +5,29 @@
 
 #include "../helpers/println.hpp"
 
-struct PascalString{
-	int length;            // number of chars used
-	char characters[256];  // chars of some character string
+struct PascalString {
+    int length;            // number of chars used
+    char characters[256];  // chars of some character string
 };
 
 char cStringArea[1024];
 
 int hexDigitToInt(char hexDigit) {
-int value = 0;
+    int value = 0;
 
-if(hexDigit > 47 && hexDigit < 58)
-    value = hexDigit - 48;
+    if (hexDigit > 47 && hexDigit < 58)
+        value = hexDigit - 48;
 
-if(hexDigit > 96 && hexDigit < 103)
-    value = hexDigit - 97 + 10;
+    if (hexDigit > 96 && hexDigit < 103)
+        value = hexDigit - 97 + 10;
 
-return value;
+    return value;
 }
 
 int hexStringToInt(PascalString binaryDigits) {
     int returnValue = 0;
 
-    for(int i = 0; i <= binaryDigits.length; ++i) {
+    for (int i = 0; i <= binaryDigits.length; ++i) {
         returnValue += binaryDigits.characters[i];
     }
 
@@ -35,17 +35,17 @@ int hexStringToInt(PascalString binaryDigits) {
 }
 
 void printPascalString(PascalString s) {
-    for(int i = 0; i <= s.length; i++) {
+    for (int i = 0; i <= s.length; i++) {
         print(s.characters[i]);
     }
     println("");
 }
 
 PascalString intToDual(int n) {
-    
+
     int i = std::to_string(n).length() * 4;
     PascalString string = {i};
-    while(n >= 1) {
+    while (n >= 1) {
         string.characters[i] = (n % 2) + '0';
         n = n / 2;
         i--;
@@ -54,24 +54,30 @@ PascalString intToDual(int n) {
 }
 
 char intToHexChar(int n) {
-    if(n > 9) {
-        switch(n) {
-            case 10: return 'A';
-            case 11: return 'B';
-            case 12: return 'C';
-            case 13: return 'D';
-            case 14: return 'E';
-            case 15: return 'F';
-            default: return 'X';
+    if (n > 9) {
+        switch (n) {
+            case 10:
+                return 'A';
+            case 11:
+                return 'B';
+            case 12:
+                return 'C';
+            case 13:
+                return 'D';
+            case 14:
+                return 'E';
+            case 15:
+                return 'F';
+            default:
+                return 'X';
         }
-    }
-    else return n + '0';
+    } else return n + '0';
 }
 
 PascalString intToHex(int n) {
     int i = std::to_string(n).length();
     PascalString string = {i};
-    while(n >= 1) {
+    while (n >= 1) {
         string.characters[i] = intToHexChar(n % 16);
         n = n / 16;
         i--;
@@ -81,24 +87,21 @@ PascalString intToHex(int n) {
 }
 
 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.length < i) result.characters[i] = longString.characters[i];
-        result.characters[i] = longString.characters[i] & shortString.characters[i];
+    PascalString result = {a.length, '0'};
+
+    for (int i = b.length; i >= 0; --i) {
+        if (a.length < i) result.characters[i] = a.characters[i];
+        result.characters[i] = a.characters[i] & b.characters[i];
     }
-    
+
     return result;
 }
 
 PascalString bitwiseHexAnd(PascalString a, PascalString b) {
     PascalString result = {a.length, '0'};
 
-    for(int i = b.length; i >= 0; --i) {
-        if(a.length < i) result.characters[i] = a.characters[i];
-        println("i: ", i, " ", a.characters[i] & b.characters[i]);
+    for (int i = b.length; i >= 0; --i) {
+        if (a.length < i) result.characters[i] = a.characters[i];
         result.characters[i] = a.characters[i] & b.characters[i];
     }
 
@@ -110,53 +113,53 @@ int to_c_string(PascalString s) {
 }
 
 void line() {
-println("===================================");
+    println("===================================");
 }
 
-int main(int argc, char** argv, char** envp) {
+int main(int argc, char **argv, char **envp) {
 
-  PascalString s = {3, '1', '0', '0'};
-  PascalString s2 = {4, 'f', 'f', 'f', 'f'};
-  println(hexStringToInt(s));
-  line();
-  println(hexStringToInt(s2));
-  line();
-  println(hexDigitToInt('d'));
-  line();
-  println(hexDigitToInt('9'));
-  line();
-  println(hexDigitToInt('2'));
-  
-  printPascalString(s2);
-  line();
-  
-  int controlRegister = 128;
-  controlRegister |= 64+32;
-  controlRegister ^=16;
-  controlRegister &= 128+64;
-  controlRegister <<= 1;
-  
-  println(controlRegister);
-  line();
-  println(intToHexChar(6));
-  line();
-  println(intToHexChar(10));
-  line();
-  printPascalString(intToDual(4106));
-  line();
-  printPascalString(intToHex(965));
-  line();
-  printPascalString(intToHex(1956));
+    PascalString s = {3, '1', '0', '0'};
+    PascalString s2 = {4, 'f', 'f', 'f', 'f'};
+    println(hexStringToInt(s));
+    line();
+    println(hexStringToInt(s2));
+    line();
+    println(hexDigitToInt('d'));
+    line();
+    println(hexDigitToInt('9'));
+    line();
+    println(hexDigitToInt('2'));
 
-  line();
-  printPascalString(bitwiseDualAnd({3, '1', '1', '0'}, {4, '1', '1', '1', '0'}));
-  line();
-  printPascalString(bitwiseDualAnd({3, '1', '1', '1'}, {4, '1', '1', '1', '0'}));
-  line();
-  printPascalString(bitwiseDualAnd({3, '1', '1', '0'}, {4, '1', '1', '1', '1'}));
-  line();
-  printPascalString(bitwiseDualAnd({3, '0', '1', '0'}, {4, '1', '0', '1', '1'}));
-  
-  return 0;
+    printPascalString(s2);
+    line();
+
+    int controlRegister = 128;
+    controlRegister |= 64 + 32;
+    controlRegister ^= 16;
+    controlRegister &= 128 + 64;
+    controlRegister <<= 1;
+
+    println(controlRegister);
+    line();
+    println(intToHexChar(6));
+    line();
+    println(intToHexChar(10));
+    line();
+    printPascalString(intToDual(4106));
+    line();
+    printPascalString(intToHex(965));
+    line();
+    printPascalString(intToHex(1956));
+
+    line();
+    printPascalString(bitwiseDualAnd({3, '1', '1', '0'}, {4, '1', '1', '1', '0'}));
+    line();
+    printPascalString(bitwiseDualAnd({3, '1', '1', '1'}, {4, '1', '1', '1', '0'}));
+    line();
+    printPascalString(bitwiseDualAnd({3, '1', '1', '0'}, {4, '1', '1', '1', '1'}));
+    line();
+    printPascalString(bitwiseDualAnd({3, '0', '1', '0'}, {4, '1', '0', '1', '1'}));
+
+    return 0;
 }