diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..fadb812
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,6 @@
+UseTab: Never
+IndentWidth: 4
+BreakBeforeBraces: Allman
+AllowShortIfStatementsOnASingleLine: Never
+IndentCaseLabels: false
+ColumnLimit: 0
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
index ee1804d..2b657d7 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,5 +1,11 @@
 {
-    "code-runner.executorMap":{
-    "c": "cd $dir && gcc $fileName -Wall -Wextra -lm -o $fileNameWithoutExt && $dir$fileNameWithoutExt"
+    "code-runner.executorMap": {
+        "c": "cd $dir && gcc $fileName -Wall -Wextra -Wsign-conversion -Werror -Wfloat-equal -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wstrict-prototypes -Wwrite-strings -Wcast-qual -Wunreachable-code -lm -o $fileNameWithoutExt && $dir$fileNameWithoutExt"
+    },
+    "code-runner.ignoreSelection": true,
+    "files.associations": {
+        "safeinput.h": "c",
+        "safeinput_th.h": "c",
+        "safeinput_jp.h": "c"
     }
 }
\ No newline at end of file
diff --git a/README.md b/README.md
index 0d828e7..a65f7bc 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@
 
 ## Program's Features
 
+### Vector Calculation
+
 * Add Vectors
 
 * Multiply Vector with scalar and vector
@@ -14,11 +16,25 @@
 
 * Find area of parrallelogram under two vectors
 
+### Extra Feature that help visualizing
+
 * Import Vector Data from and Export to Files
 
 * Set Number Precision (Number of digits after decimal point)
 
-* Support 3 Languages: English, Thai, Japanese
+### Very Good Memory Management
+
+  There is almost no memory leak in this program from testing so far.
+
+* Tested using valgrind, however, some very small leaks are possible in rare case.
+
+* Only applies on English Version
+
+### Multilingual
+
+* Support 3 Languages: English, Thai and Japanese
+
+ __Note__: In Thai and Japanese Version, Import/Export Vector and setting Number Precision is unstable. Please avoid using them.
 
 ## How to Run Program
 
@@ -26,6 +42,14 @@
 
   To use import/export function, VectorSave Folder must be in the same directory.
 
+## Sample Vector Data to start with
+
+  I've already put some sample vector data you can play with!
+
+  These are generated using ```numpy```.
+
+  Note: Use Import Vector Function to import them, but please avoid using them in TH,JP Version as it is unstable.
+
 ## Compatibility
 
 Support both Windows and UNIX OS.
@@ -40,7 +64,7 @@ Note : ```-lm``` (Math Library) must be manually attached when compiling in UNIX
 
   Version used to present to Teacher (Semester 1) : v1.3.0
 
-  Current Release : v3.2
+  Current Release : v3.3
 
 ## Credits
 
@@ -76,16 +100,22 @@ Note : ```-lm``` (Math Library) must be manually attached when compiling in UNIX
 
   Subject : 「การเขียนโปรแกรม 2 (ง30222)」 Triam Udom Suksa School (2020/2)
   
-    * 総制作 : @Leomotors
+    * 制作監督 : @Leomotors
+
+    * Helper・Reviewer : @Teproanyx
+    
+    * Honorable Mention : Stack Overflow
 
-    * Honor Helper : Stack Overflow
+### Special Thanks
 
-    * Reviewer・Tester : @Teproanyx
+  This Project uses Safe Input Module by @Teproanyx
 
 ## Program Version History
 
 ### Version 3 (Latest Version)
 
+  **2021-03-03** Present Ready Update (3.3): Fixed many bugs. Program should be stable now
+
   **2021-03-01** Release 3.2: Seperate File (SafeInput.h) and Fatal Bug Fixes
 
   **2021-02-24** February Improvement Update (3.1): Upgrade to Double, Fix Mem Leak
diff --git a/SafeInput.h b/SafeInput/SafeInput.h
similarity index 90%
rename from SafeInput.h
rename to SafeInput/SafeInput.h
index a6d9d8a..8df8235 100644
--- a/SafeInput.h
+++ b/SafeInput/SafeInput.h
@@ -4,6 +4,9 @@
  * * Customed for this Vector Calculator: @Leomotors
  */
 
+#ifndef TEPROANYX_SAFE_INPUT
+#define TEPROANYX_SAFE_INPUT
+
 #include <ctype.h>
 #include <errno.h>
 #include <float.h>
@@ -92,7 +95,7 @@ char *getString(const char *prompt)
 {
     size_t size = INITIAL_BUFFER;
     printf("%s", prompt);
-    char *buffer = (char *)malloc((size + 1) * sizeof(*buffer));
+    char *buffer = malloc((size + 1) * sizeof(*buffer));
     memoryError(buffer);
     if (fgets(buffer, size + 1, stdin) == NULL)
     {
@@ -102,7 +105,7 @@ char *getString(const char *prompt)
     }
     while (buffer[strlen(buffer) - 1] != '\n')
     {
-        char *subBuffer = (char *)malloc((size + 1) * sizeof(*subBuffer));
+        char *subBuffer = malloc((size + 1) * sizeof(*subBuffer));
         memoryError(subBuffer);
 
         if (fgets(subBuffer, size + 1, stdin) == NULL)
@@ -114,14 +117,14 @@ char *getString(const char *prompt)
         }
 
         size *= 2;
-        buffer = (char *)realloc(buffer, size + 1);
+        buffer = realloc(buffer, size + 1);
         memoryError(buffer);
 
         strncat(buffer, subBuffer, size / 2);
         free(subBuffer);
     }
     buffer[strlen(buffer) - 1] = '\0';
-    buffer = (char *)realloc(buffer, strlen(buffer) + 1);
+    buffer = realloc(buffer, strlen(buffer) + 1);
     memoryError(buffer);
     return buffer;
 }
@@ -134,3 +137,5 @@ void memoryError(const void *pointer)
         exit(EXIT_FAILURE);
     }
 }
+
+#endif
diff --git a/SafeInput-wchar.h b/SafeInput/SafeInput_JP.h
similarity index 67%
rename from SafeInput-wchar.h
rename to SafeInput/SafeInput_JP.h
index 65f7957..3b0a667 100644
--- a/SafeInput-wchar.h
+++ b/SafeInput/SafeInput_JP.h
@@ -1,9 +1,14 @@
 /**
- * * Safe Input Module wchar_t as prompt version
+ * * Safe Input Module Japanese Version
+ * ! Translation might not be 100% correct. Author is just at N5.
+ * ! 翻訳が全部正しくない可能性があります。 作者はただN5です。
  * * Original Work: @Teproanyx
  * * Customed for this Vector Calculator: @Leomotors
  */
 
+#ifndef TEPROANYX_SAFE_INPUT
+#define TEPROANYX_SAFE_INPUT
+
 #include <ctype.h>
 #include <errno.h>
 #include <float.h>
@@ -30,7 +35,7 @@ long getLong(const wchar_t *prompt)
     if (buffer[0] == '\0')
     {
         free(buffer);
-        printf("Input error, please try again!\n");
+        wprintf(L"入力エラー もう一度やり直してください。\n");
         return getLong(prompt);
     }
 
@@ -42,7 +47,7 @@ long getLong(const wchar_t *prompt)
     {
         free(buffer);
         fprintf(stderr, "Value conversion error\n");
-        printf("Input error, please try again!\n");
+        wprintf(L"入力エラー もう一度やり直してください。\n");
         return getLong(prompt);
     }
 
@@ -56,7 +61,7 @@ int getInt(const wchar_t *prompt)
     long n = getLong(prompt);
     if (n > INT_MAX || n < INT_MIN)
     {
-        printf("Input error, please try again!\n");
+        wprintf(L"入力エラー もう一度やり直してください。\n");
         return getInt(prompt);
     }
     return (int)n;
@@ -68,7 +73,7 @@ double getDouble(const wchar_t *prompt)
     if (buffer[0] == '\0')
     {
         free(buffer);
-        printf("Input error, please try again!\n");
+        wprintf(L"入力エラー もう一度やり直してください。\n");
         return getLong(prompt);
     }
 
@@ -80,7 +85,7 @@ double getDouble(const wchar_t *prompt)
     {
         free(buffer);
         fprintf(stderr, "Value conversion error\n");
-        printf("Input error, please try again!\n");
+        wprintf(L"入力エラー もう一度やり直してください。\n");
         return getDouble(prompt);
     }
 
@@ -93,36 +98,36 @@ char *getString(const wchar_t *prompt)
 {
     size_t size = INITIAL_BUFFER;
     wprintf(L"%s", prompt);
-    char *buffer = (char *)malloc((size + 1) * sizeof(*buffer));
+    char *buffer = malloc((size + 1) * sizeof(*buffer));
     memoryError(buffer);
     if (fgets(buffer, size + 1, stdin) == NULL)
     {
         free(buffer);
-        printf("Error, try again!\n");
+        wprintf(L"エラー、もう一度やり直してください。\n");
         return getString(prompt);
     }
     while (buffer[strlen(buffer) - 1] != '\n')
     {
-        char *subBuffer = (char *)malloc((size + 1) * sizeof(*subBuffer));
+        char *subBuffer = malloc((size + 1) * sizeof(*subBuffer));
         memoryError(subBuffer);
 
         if (fgets(subBuffer, size + 1, stdin) == NULL)
         {
             free(buffer);
             free(subBuffer);
-            printf("Read Error(WTF HOW), try again MTFKER!\n");
+            wprintf(L"Read Error(WTF HOW), try again MTFKER!\n");
             return getString(prompt);
         }
 
         size *= 2;
-        buffer = (char *)realloc(buffer, size + 1);
+        buffer = realloc(buffer, size + 1);
         memoryError(buffer);
 
         strncat(buffer, subBuffer, size / 2);
         free(subBuffer);
     }
     buffer[strlen(buffer) - 1] = '\0';
-    buffer = (char *)realloc(buffer, strlen(buffer) + 1);
+    buffer = realloc(buffer, strlen(buffer) + 1);
     memoryError(buffer);
     return buffer;
 }
@@ -131,7 +136,9 @@ void memoryError(const void *pointer)
 {
     if (pointer == NULL)
     {
-        printf("Not enough RAM. Terminating program...\n");
+        wprintf(L"RAMは十分ではありません プログラムを終了しています...\n");
         exit(EXIT_FAILURE);
     }
 }
+
+#endif
diff --git a/SafeInput/SafeInput_TH.h b/SafeInput/SafeInput_TH.h
new file mode 100644
index 0000000..85bcb1c
--- /dev/null
+++ b/SafeInput/SafeInput_TH.h
@@ -0,0 +1,142 @@
+/**
+ * * Safe Input Module Thai Version
+ * * Original Work: @Teproanyx
+ * * Customed for this Vector Calculator: @Leomotors
+ */
+
+#ifndef TEPROANYX_SAFE_INPUT
+#define TEPROANYX_SAFE_INPUT
+
+#include <ctype.h>
+#include <errno.h>
+#include <float.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#define INITIAL_BUFFER 8
+
+// * Function Prototype (Declaration) * //
+
+long long getlong(const wchar_t *);
+int getInt(const wchar_t *);
+double getDouble(const wchar_t *);
+char *getString(const wchar_t *);
+void memoryError(const void *);
+
+// * Function Definition * //
+
+long getLong(const wchar_t *prompt)
+{
+    char *buffer = getString(prompt);
+    if (buffer[0] == '\0')
+    {
+        free(buffer);
+        wprintf(L"การป้อนข้อมูลผิดพลาด โปรดลองใหม่อีกครั้ง\n");
+        return getLong(prompt);
+    }
+
+    char *end = NULL;
+    errno = 0;
+
+    long n = strtol(buffer, &end, 10);
+    if (errno || *end != '\0')
+    {
+        free(buffer);
+        fprintf(stderr, "Value conversion error\n");
+        wprintf(L"การป้อนข้อมูลผิดพลาด โปรดลองใหม่อีกครั้ง\n");
+        return getLong(prompt);
+    }
+
+    free(buffer);
+
+    return n;
+}
+
+int getInt(const wchar_t *prompt)
+{
+    long n = getLong(prompt);
+    if (n > INT_MAX || n < INT_MIN)
+    {
+        wprintf(L"การป้อนข้อมูลผิดพลาด โปรดลองใหม่อีกครั้ง\n");
+        return getInt(prompt);
+    }
+    return (int)n;
+}
+
+double getDouble(const wchar_t *prompt)
+{
+    char *buffer = getString(prompt);
+    if (buffer[0] == '\0')
+    {
+        free(buffer);
+        wprintf(L"การป้อนข้อมูลผิดพลาด โปรดลองใหม่อีกครั้ง\n");
+        return getLong(prompt);
+    }
+
+    char *end = NULL;
+    errno = 0;
+
+    double n = strtod(buffer, &end);
+    if (errno || *end != '\0')
+    {
+        free(buffer);
+        fprintf(stderr, "Value conversion error\n");
+        wprintf(L"การป้อนข้อมูลผิดพลาด โปรดลองใหม่อีกครั้ง\n");
+        return getDouble(prompt);
+    }
+
+    free(buffer);
+
+    return n;
+}
+
+char *getString(const wchar_t *prompt)
+{
+    size_t size = INITIAL_BUFFER;
+    wprintf(L"%s", prompt);
+    char *buffer = malloc((size + 1) * sizeof(*buffer));
+    memoryError(buffer);
+    if (fgets(buffer, size + 1, stdin) == NULL)
+    {
+        free(buffer);
+        wprintf(L"Error, try again!\n");
+        return getString(prompt);
+    }
+    while (buffer[strlen(buffer) - 1] != '\n')
+    {
+        char *subBuffer = malloc((size + 1) * sizeof(*subBuffer));
+        memoryError(subBuffer);
+
+        if (fgets(subBuffer, size + 1, stdin) == NULL)
+        {
+            free(buffer);
+            free(subBuffer);
+            wprintf(L"Read Error(WTF HOW), try again MTFKER!\n");
+            return getString(prompt);
+        }
+
+        size *= 2;
+        buffer = realloc(buffer, size + 1);
+        memoryError(buffer);
+
+        strncat(buffer, subBuffer, size / 2);
+        free(subBuffer);
+    }
+    buffer[strlen(buffer) - 1] = '\0';
+    buffer = realloc(buffer, strlen(buffer) + 1);
+    memoryError(buffer);
+    return buffer;
+}
+
+void memoryError(const void *pointer)
+{
+    if (pointer == NULL)
+    {
+        wprintf(L"RAM ไม่เพียงพอ กำลังปิดโปรแกรม...\n");
+        exit(EXIT_FAILURE);
+    }
+}
+
+#endif
diff --git a/VectorCalc.c b/VectorCalc.c
index bec1cf6..d465df6 100644
--- a/VectorCalc.c
+++ b/VectorCalc.c
@@ -9,7 +9,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#include "SafeInput.h"
+#include "SafeInput/SafeInput.h"
 
 #define i 0
 #define j 1
@@ -38,6 +38,7 @@ void ShowAllVectors(void);
 void saveVectorToSlot(double *);
 bool isVector(int);
 bool deleteAllVectors(void);
+void freeAllVectors(void);
 
 // * Import and Export
 void importVector(void);
@@ -61,11 +62,14 @@ int main(void)
     while (true)
     {
         cls();
-        printf("=====|Vector Calculator V3.2|=====\n\n");
+        printf("=====|Vector Calculator V3.3|=====\n\n");
         ShowAllVectors();
         printMainMenu();
         if (!programCore())
+        {
+            freeAllVectors();
             return 0;
+        }
     }
 }
 
@@ -180,7 +184,7 @@ void vectorOperation(void)
         printf("\n");
         break;
     case 2:
-        temp = getInt("Enter scalar to multiply with: ");
+        temp = getDouble("Enter scalar to multiply with: ");
         saveVectorToSlot((scalarMult(vector[u], temp)));
         break;
     case 3:
@@ -439,6 +443,15 @@ bool deleteAllVectors(void)
     return true;
 }
 
+void freeAllVectors(void)
+{
+    for (int lc = 0; lc < VECTOR_ARRAY_SIZE; lc++)
+    {
+        if (vector[lc] != NULL)
+            free(vector[lc]);
+    }
+}
+
 // * Import and Export
 void importVector(void)
 {
@@ -495,9 +508,9 @@ void exportVector(void)
     free(tmp);
     if ((outputFile = fopen(filename, "r")) != NULL)
     {
+        fclose(outputFile);
         if (!getConfirmation("File already exists, Overwrite? [Y/N]: "))
         {
-            fclose(outputFile);
             return;
         }
     }
@@ -508,7 +521,6 @@ void exportVector(void)
         if (vector[c] != NULL)
             fprintf(outputFile, "%d %lf %lf %lf\n", c, vector[c][i], vector[c][j], vector[c][k]);
     }
-    free(tmp);
     fclose(outputFile);
 }
 
diff --git a/VectorCalc_JP.c b/VectorCalc_JP.c
index 6e0a9d3..bd15e7d 100644
--- a/VectorCalc_JP.c
+++ b/VectorCalc_JP.c
@@ -17,7 +17,7 @@
 #include <io.h>
 #include <wchar.h>
 
-#include "SafeInput-wchar.h"
+#include "SafeInput/SafeInput_JP.h"
 
 #define i 0
 #define j 1
@@ -46,6 +46,7 @@ void ShowAllVectors(void);
 void saveVectorToSlot(double *);
 bool isVector(int);
 bool deleteAllVectors(void);
+void freeAllVectors(void);
 
 // * Import and Export
 void importVector(void);
@@ -67,11 +68,14 @@ int main(void)
     while (true)
     {
         cls();
-        wprintf(L"=====|Vector Calculator V3.2 Japanese Version|=====\n\n");
+        wprintf(L"=====|Vector Calculator V3.3 Japanese Version|=====\n\n");
         ShowAllVectors();
         printMainMenu();
         if (!programCore())
+        {
+            freeAllVectors();
             return 0;
+        }
     }
 }
 
@@ -81,7 +85,7 @@ void printMainMenu(void)
     wprintf(L"\n下の機能を選んでください。\n");
     wprintf(L"[1] 新ベクトルを入力する\n");
     wprintf(L"[2] ベクトルについて計算\n");
-    wprintf(L"[3] インポート・エクスポートベクトル\n");
+    wprintf(L"[3] Lab: インポート・エクスポートベクトル\n");
     wprintf(L"[4] すべてのベクトルを削除する\n");
     wprintf(L"[5] 設定\n");
     wprintf(L"[0] プログラムを終了する\n");
@@ -187,7 +191,7 @@ void vectorOperation(void)
         wprintf(L"\n");
         break;
     case 2:
-        temp = getInt(L"持って掛けるスカラー量を入力してください: ");
+        temp = getDouble(L"持って掛けるスカラー量を入力してください: ");
         saveVectorToSlot((scalarMult(vector[u], temp)));
         break;
     case 3:
@@ -222,7 +226,7 @@ void settingsMenu(void)
     int choice;
     wprintf(L"\n=====|設定|=====\n\n");
     wprintf(L"[1] 画面の色を変化する\n");
-    wprintf(L"[2] 数値精度を設定する\n");
+    wprintf(L"[2] Lab: 数値精度を設定する\n");
     wprintf(L"[0] 戻る\n");
     choice = getInt(L"選ぶ： ");
     switch (choice)
@@ -233,6 +237,10 @@ void settingsMenu(void)
     case 2:
         while (true)
         {
+            if (!getConfirmation(L"警告: この機能は不安定で、エラー可能性があります。継続しますか? [Y/N]: "))
+            {
+                return;
+            }
             numberPrecision = getInt(L"小数点以下の桁数 ： ");
             if (numberPrecision >= 0 && numberPrecision <= 6)
                 break;
@@ -256,6 +264,7 @@ void fileMenu(void)
 {
     int choice;
     wprintf(L"\n=====|ファイルメニュー|=====\n\n");
+    wprintf(L"警告: この機能は不安定で、エラー可能性があります。\n");
     wprintf(L"[1] インポート・ベクトル\n");
     wprintf(L"[2] エクスポート・ベクトル\n");
     wprintf(L"[0] 戻る\n");
@@ -377,14 +386,11 @@ wchar_t *printvec(double *u)
 
 void ShowAllVectors(void)
 {
-    wchar_t *tmp;
     for (int m = 0; m < VECTOR_ARRAY_SIZE; m++)
     {
         if (vector[m] != NULL)
         {
-            tmp = printvec(vector[m]);
-            wprintf(L"ベクトル #%d : %s\n", m, tmp);
-            free(tmp);
+            wprintf(L"ベクトル #%d : %s\n", m, printvec(vector[m]));
         }
     }
 }
@@ -392,9 +398,7 @@ void ShowAllVectors(void)
 void saveVectorToSlot(double *u)
 {
     int w;
-    wchar_t *tmp = printvec(u);
-    wprintf(L"結果のベクトルは %s\n", tmp);
-    free(tmp);
+    wprintf(L"結果のベクトルは %s\n", printvec(u));
     if (!getConfirmation(L"ベクトルを保存しますか？ [Y/N]: "))
     {
         free(u);
@@ -447,6 +451,15 @@ bool deleteAllVectors(void)
     return true;
 }
 
+void freeAllVectors(void)
+{
+    for (int lc = 0; lc < VECTOR_ARRAY_SIZE; lc++)
+    {
+        if (vector[lc] != NULL)
+            free(vector[lc]);
+    }
+}
+
 // * Import and Export
 void importVector(void)
 {
@@ -503,9 +516,9 @@ void exportVector(void)
     free(tmp);
     if ((outputFile = fopen(filename, "r")) != NULL)
     {
+        fclose(outputFile);
         if (!getConfirmation(L"このファイルはすでに存在します。 上書きしますか？ [Y/N]: "))
         {
-            fclose(outputFile);
             return;
         }
     }
@@ -516,7 +529,6 @@ void exportVector(void)
         if (vector[c] != NULL)
             fprintf(outputFile, "%d %lf %lf %lf\n", c, vector[c][i], vector[c][j], vector[c][k]);
     }
-    free(tmp);
     fclose(outputFile);
 }
 
diff --git a/VectorCalc_TH.c b/VectorCalc_TH.c
index 17c0aa0..ee74598 100644
--- a/VectorCalc_TH.c
+++ b/VectorCalc_TH.c
@@ -15,7 +15,7 @@
 #include <io.h>
 #include <wchar.h>
 
-#include "SafeInput-wchar.h"
+#include "SafeInput/SafeInput_TH.h"
 
 #define i 0
 #define j 1
@@ -44,6 +44,7 @@ void ShowAllVectors(void);
 void saveVectorToSlot(double *);
 bool isVector(int);
 bool deleteAllVectors(void);
+void freeAllVectors(void);
 
 // * Import and Export
 void importVector(void);
@@ -65,11 +66,14 @@ int main(void)
     while (true)
     {
         cls();
-        wprintf(L"=====|Vector Calculator V3.2 Thai Version|=====\n\n");
+        wprintf(L"=====|Vector Calculator V3.3 Thai Version|=====\n\n");
         ShowAllVectors();
         printMainMenu();
         if (!programCore())
+        {
+            freeAllVectors();
             return 0;
+        }
     }
 }
 
@@ -79,7 +83,7 @@ void printMainMenu(void)
     wprintf(L"\nโปรดเลือกฟังก์ชันจากข้างล่างนี้\n");
     wprintf(L"[1] ป้อนเวกเตอร์ใหม่\n");
     wprintf(L"[2] คำนวณเกี่ยวกับเวกเตอร์\n");
-    wprintf(L"[3] นำเข้าและส่งออกเวกเตอร์\n");
+    wprintf(L"[3] Lab: นำเข้าและส่งออกเวกเตอร์\n");
     wprintf(L"[4] ลบเวกเตอร์ทั้งหมด\n");
     wprintf(L"[5] การตั้งค่า\n");
     wprintf(L"[0] ออกจากโปรแกรม\n");
@@ -184,7 +188,7 @@ void vectorOperation(void)
         wprintf(L"\n");
         break;
     case 2:
-        temp = getInt(L"ใส่ค่าสเกลาร์ที่จะนำไปคูณ: ");
+        temp = getDouble(L"ใส่ค่าสเกลาร์ที่จะนำไปคูณ: ");
         saveVectorToSlot((scalarMult(vector[u], temp)));
         break;
     case 3:
@@ -219,7 +223,7 @@ void settingsMenu(void)
     int choice;
     wprintf(L"\n=====|การตั้งค่า|=====\n\n");
     wprintf(L"[1] เปลี่ยนสีหน้าจอ\n");
-    wprintf(L"[2] เลือกความละเอียดของตัวเลข\n");
+    wprintf(L"[2] Lab: เลือกความละเอียดของตัวเลข\n");
     wprintf(L"[0] กลับ\n");
     choice = getInt(L"ตัวเลือกที่เลือก: ");
     switch (choice)
@@ -230,6 +234,10 @@ void settingsMenu(void)
     case 2:
         while (true)
         {
+            if(!getConfirmation(L"คำเตือน: ฟังก์ชันนี้ไม่เสถียรและอาจทำให้โปรแกรมค้างได้ ดำเนินการต่อ? [Y/N]: "))
+            {
+                return;
+            }
             numberPrecision = getInt(L"จำนวนหลักหลังทศนิยม: ");
             if (numberPrecision >= 0 && numberPrecision <= 6)
                 break;
@@ -253,6 +261,7 @@ void fileMenu(void)
 {
     int choice;
     wprintf(L"\n=====|เมนูไฟล์|=====\n\n");
+    wprintf(L"คำเตือน: ฟังก์ชันนี้ไม่เสถียรและอาจทำให้โปรแกรมค้างได้\n");
     wprintf(L"[1] นำเข้าเวกเตอร์\n");
     wprintf(L"[2] ส่งออกเวกเตอร์\n");
     wprintf(L"[0] กลับ\n");
@@ -366,21 +375,16 @@ wchar_t *printvec(double *u)
     }
     // * Forcing '\0' to stop string from printing
     wstr[tstrlen] = '\0';
-    free(format);
-    free(str);
     return wstr;
 }
 
 void ShowAllVectors(void)
 {
-    wchar_t *tmp;
     for (int m = 0; m < VECTOR_ARRAY_SIZE; m++)
     {
         if (vector[m] != NULL)
         {
-            tmp = printvec(vector[m]);
-            wprintf(L"เวกเตอร์ หมายเลข %d : %s\n", m, tmp);
-            free(tmp);
+            wprintf(L"เวกเตอร์ หมายเลข %d : %s\n", m, printvec(vector[m]));
         }
     }
 }
@@ -388,9 +392,7 @@ void ShowAllVectors(void)
 void saveVectorToSlot(double *u)
 {
     int w;
-    wchar_t *tmp = printvec(u);
-    wprintf(L"เวกเตอร์ผลลัพธ์คือ %s\n", tmp);
-    free(tmp);
+    wprintf(L"เวกเตอร์ผลลัพธ์คือ %s\n", printvec(u));
     if (!getConfirmation(L"ต้องการบันทึกเวกเตอร์หรือไม่? [Y/N]: "))
     {
         free(u);
@@ -443,6 +445,15 @@ bool deleteAllVectors(void)
     return true;
 }
 
+void freeAllVectors(void)
+{
+    for (int lc = 0; lc < VECTOR_ARRAY_SIZE; lc++)
+    {
+        if (vector[lc] != NULL)
+            free(vector[lc]);
+    }
+}
+
 // * Import and Export
 void importVector(void)
 {
@@ -499,9 +510,9 @@ void exportVector(void)
     free(tmp);
     if ((outputFile = fopen(filename, "r")) != NULL)
     {
+        fclose(outputFile);
         if (!getConfirmation(L"ไฟล์นี้มีอยู่แล้ว เขียนทับ? [Y/N]: "))
         {
-            fclose(outputFile);
             return;
         }
     }
@@ -512,7 +523,6 @@ void exportVector(void)
         if (vector[c] != NULL)
             fprintf(outputFile, "%d %lf %lf %lf\n", c, vector[c][i], vector[c][j], vector[c][k]);
     }
-    free(tmp);
     fclose(outputFile);
 }
 
diff --git a/VectorSave/Data0.txt b/VectorSave/Data0.txt
new file mode 100644
index 0000000..1607ed3
--- /dev/null
+++ b/VectorSave/Data0.txt
@@ -0,0 +1,11 @@
+0 0 0 0
+1 3 4 5
+2 5 6 7
+3 1 2 4
+4 5 1 9
+5 5 1 2
+6 -3 2 0
+7 1 -9 5
+8 -5 -3 -4
+9 -1 4 -2
+10 3 2 5
\ No newline at end of file
diff --git a/VectorSave/Data1.txt b/VectorSave/Data1.txt
index 1607ed3..c5474d6 100644
--- a/VectorSave/Data1.txt
+++ b/VectorSave/Data1.txt
@@ -1,11 +1,15 @@
-0 0 0 0
-1 3 4 5
-2 5 6 7
-3 1 2 4
-4 5 1 9
-5 5 1 2
-6 -3 2 0
-7 1 -9 5
-8 -5 -3 -4
-9 -1 4 -2
-10 3 2 5
\ No newline at end of file
+0   99.332  93.641  34.608
+1   36.141   0.583 -63.554
+2   86.677 -39.405  23.261
+3  -60.036  80.595  28.393
+4   88.631   6.795 -21.977
+5  -48.548 -74.314 -62.998
+6  -20.603 -87.317  22.977
+7   26.794 -85.239  56.187
+8  -65.324 -73.975  49.631
+9  -40.374  79.199  60.675
+10   0.935 -81.437 -62.618
+11 -81.747  41.623 -12.839
+12 -70.467  96.488  91.490
+13  57.334  14.368  41.699
+14 -73.032 -62.768  87.051
\ No newline at end of file
diff --git a/VectorSave/Data2.txt b/VectorSave/Data2.txt
index 722b549..c1cf698 100644
--- a/VectorSave/Data2.txt
+++ b/VectorSave/Data2.txt
@@ -1,11 +1,15 @@
-0 0.000000 0.000000 0.000000
-1 3.000000 4.000000 5.000000
-2 5.000000 6.000000 7.000000
-3 1.000000 2.000000 4.000000
-4 5.000000 1.000000 9.000000
-5 5.000000 1.000000 2.000000
-6 -3.000000 2.000000 0.000000
-7 1.000000 -9.000000 5.000000
-8 -5.000000 -3.000000 -4.000000
-9 -1.000000 4.000000 -2.000000
-10 3.000000 2.000000 5.000000
+0  -21.932 -40.262 -21.130
+1  -73.863 -83.654  57.492
+2   75.690  45.040 -81.184
+3  -51.539 -39.966 -78.646
+4  -63.316 -74.593 -57.215
+5   56.525  12.497 -78.899
+6    1.701  68.514  51.192
+7  -59.872  64.103  59.436
+8   75.968 -22.968  45.928
+9  -31.875  85.848 -47.337
+10 -12.338   1.392 -44.079
+11  48.159 -88.411 -25.738
+12  18.610 -73.487 -42.981
+13 -78.997   7.927  63.917
+14 -37.649 -98.462  97.400
\ No newline at end of file
diff --git a/VectorSave/Data3.txt b/VectorSave/Data3.txt
index c007c00..e267c08 100644
--- a/VectorSave/Data3.txt
+++ b/VectorSave/Data3.txt
@@ -1,5 +1,15 @@
-0 5 6 7
-1 2 3 4
-2 8 9 0
-3 10 11 21
-4 29 1 93
+0   43.4544   7.9190 -80.2831
+1    4.4897 -31.0335 -56.4951
+2  -57.9346  85.6819 -15.1778
+3   44.1331  54.7878  27.5071
+4  -99.9060  29.5024  38.3727
+5   52.8616 -74.4142  23.7594
+6   29.4211  -1.5573 -45.5659
+7  -28.1238  92.5853 -33.4357
+8   53.8767 -54.8586 -49.8934
+9    3.0729  48.4579  22.7302
+10 -50.3268  83.8453  -5.6935
+11  53.9872 -50.0624 -69.3693
+12  95.1284  -7.3761  56.9119
+13  54.4445 -26.8349 -31.9935
+14  48.4963   2.4828 -76.8858
\ No newline at end of file
diff --git a/VectorSave/Data4.txt b/VectorSave/Data4.txt
index 4efb902..d5ebf61 100644
--- a/VectorSave/Data4.txt
+++ b/VectorSave/Data4.txt
@@ -1,6 +1,15 @@
-0 5.000000 6.000000 7.000000
-1 2.000000 3.000000 4.000000
-2 837.000000 -744.000000 -253.000000
-3 10.000000 11.000000 21.000000
-4 15.000000 17.000000 28.000000
-5 9.000000 20.000000 2.000000
+0   34.434927  49.334712  33.795367
+1  -55.382226  71.053610 -32.984136
+2  -88.907807  68.849260  65.443037
+3  -45.068803 -51.373909 -88.847740
+4  -78.751739 -66.701568  95.235849
+5   71.246539  91.780275  97.608392
+6  -48.981635 -46.215974  56.646003
+7    0.716533 -42.428457 -12.809766
+8   64.281283  97.652050 -10.255882
+9   58.152714  18.041451 -93.579957
+10 -61.426656  73.623518 -89.452636
+11 -91.556438  91.095750  88.259268
+12 -38.278976  55.926798  -0.427501
+13  57.754220 -34.637380 -96.054396
+14  16.116748  88.016583 -47.592692
\ No newline at end of file