diff --git a/dot vscode/launch.json b/dot vscode/launch.json
index 081340e..58291ac 100644
--- a/dot vscode/launch.json	
+++ b/dot vscode/launch.json	
@@ -4,7 +4,7 @@
             "name": "Debug: C/C++",
             "type": "cppdbg",
             "request": "launch",
-            "program": "${fileDirname}\\build\\${fileBasenameNoExtension}.exe",
+            "program": "${workspaceFolder}\\build\\${fileBasenameNoExtension}.exe",
             "args": [],
             "stopAtEntry": false,
             "cwd": "${fileDirname}",
@@ -30,7 +30,7 @@
             "name": "Release: C/C++",
             "type": "cppdbg",
             "request": "launch",
-            "program": "${fileDirname}\\build\\${fileBasenameNoExtension}.exe",
+            "program": "${workspaceFolder}\\build\\${fileBasenameNoExtension}.exe",
             "args": [],
             "stopAtEntry": false,
             "cwd": "${fileDirname}",
diff --git a/dot vscode/tasks.json b/dot vscode/tasks.json
index 6037983..8299a09 100644
--- a/dot vscode/tasks.json	
+++ b/dot vscode/tasks.json	
@@ -6,12 +6,13 @@
             "command": "C:\\msys64\\mingw64\\bin\\g++.exe",
             "args": [
                 "-fdiagnostics-color=always",
+                "-I${workspaceFolder}\\include",
                 "-ggdb",
                 "-std=c++20",
                 "-pedantic-errors",
-                "${fileDirname}/**.cpp",
+                "${workspaceFolder}/src/**.cpp",
                 "-o",
-                "${fileDirname}\\build\\${fileBasenameNoExtension}.exe"
+                "${workspaceFolder}\\build\\${fileBasenameNoExtension}.exe"
             ],
             "options": {
                 "cwd": "${fileDirname}"
@@ -26,13 +27,14 @@
             "command": "C:\\msys64\\mingw64\\bin\\g++.exe",
             "args": [
                 "-fdiagnostics-color=always",
+                "-I${workspaceFolder}\\include",
                 "-O2",
                 "-DNDEBUG",
                 "-std=c++20",
                 "-pedantic-errors",
-                "${fileDirname}/**.cpp",
+                "${workspaceFolder}/src/**.cpp",
                 "-o",
-                "${fileDirname}\\build\\${fileBasenameNoExtension}.exe"
+                "${workspaceFolder}\\build\\${fileBasenameNoExtension}.exe"
             ],
             "options": {
                 "cwd": "${fileDirname}"
diff --git a/include/.gitkeep b/include/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/io.cpp b/io.cpp
deleted file mode 100644
index 6c03ca8..0000000
--- a/io.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include "io.h"
-#include <iostream>
-
-int readNumber()
-{
-    std::cout << "Enter a number to add: ";
-    int x{};
-    std::cin >> x;
-    return x;
-}
-void writeAnswer(int x)
-{
-    std::cout << "The answer is: " << x << "\n";
-}
\ No newline at end of file
diff --git a/io.h b/io.h
deleted file mode 100644
index 7c489bc..0000000
--- a/io.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#pragma once
-
-int readNumber();
-void writeAnswer(int x);
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
deleted file mode 100644
index 9cf4fd0..0000000
--- a/main.cpp
+++ /dev/null
@@ -1,12 +0,0 @@
-#include <iostream> // for std::cout
-#include "io.h"
-
-// Definition of function main()
-int main()
-{
-
-    int a{readNumber()};
-    int b{readNumber()};
-    writeAnswer(a + b);
-    return 0;
-}
\ No newline at end of file
diff --git a/src/algo.cpp b/src/algo.cpp
new file mode 100644
index 0000000..f13f6b4
--- /dev/null
+++ b/src/algo.cpp
@@ -0,0 +1,11 @@
+#include "algo.h"
+
+void bubble_sort_print_demo()
+{
+    int demo[]{11, 14, 3, 18, 8, 17, 43, 6, 5, 4};
+    double demo2[]{11.2, 14.3, 3.2, 18.6, 8.7, 17.9, 43.3, 12.3};
+    std::string demo3[]{"hallo", "velo", "kekw", "imagin"};
+    bubble_sort_print(sizeof(demo) / sizeof(demo[0]), demo);
+    bubble_sort_print(sizeof(demo2) / sizeof(demo2[0]), demo2);
+    bubble_sort_print(sizeof(demo3) / sizeof(demo3[0]), demo3);
+}
\ No newline at end of file
diff --git a/src/algo.h b/src/algo.h
new file mode 100644
index 0000000..52bc41f
--- /dev/null
+++ b/src/algo.h
@@ -0,0 +1,55 @@
+#pragma once
+#include <iostream>
+#include <string>
+#include <iomanip>
+
+void bubble_sort_print_demo();
+
+template <typename T>
+struct TypeName
+{
+    static const char *Get()
+    {
+        return typeid(T).name();
+    }
+};
+template <>
+struct TypeName<std::string>
+{
+    static const char *Get()
+    {
+        return "s";
+    }
+};
+
+template <class T>
+void bubble_sort(int size, T *a)
+{
+    for (int i = 0; i < size; i++)
+    {
+        for (int j = 0; j < size - 1 - i; j++)
+        {
+            if (a[j] > a[j + 1])
+            {
+                T temp{a[j]};
+                a[j] = a[j + 1];
+                a[j + 1] = temp;
+            }
+        }
+    }
+};
+
+template <typename T>
+void bubble_sort_print(int size, T *a)
+{
+    std::cout << std::left; // left justify output
+    std::cout << "unsorted " << TypeName<T>::Get() << std::setw(10) << " Array: ";
+    for (int i = 0; i < size; i++)
+        std::cout << a[i] << ", ";
+    std::cout << "\n";
+    bubble_sort(size, a);
+    std::cout << "sorted " << TypeName<T>::Get() << std::setw(12) << " Array: ";
+    for (int i = 0; i < size; i++)
+        std::cout << a[i] << ", ";
+    std::cout << "\n\n";
+};
\ No newline at end of file
diff --git a/src/io.cpp b/src/io.cpp
new file mode 100644
index 0000000..c8a8734
--- /dev/null
+++ b/src/io.cpp
@@ -0,0 +1,54 @@
+#include "io.h"
+#include <iostream>
+#include <iomanip>
+
+void add_two_numbers()
+{
+    int a{read_number()};
+    int b{read_number()};
+    write_answer(a + b);
+}
+int read_number()
+{
+    std::cout << "Enter a number to add: ";
+    int x{};
+    std::cin >> x;
+    return x;
+}
+void write_answer(int x)
+{
+    std::cout << "The answer is: " << x << "\n";
+}
+void convert_char_to_ascii()
+{
+    std::cout << "Enter a single character: ";
+    char c{};
+    std::cin >> c;
+    std::cout << "You entered '" << c << "', which hass ASCII code " << static_cast<int>(c) << ".";
+}
+
+void print_type_size_bytes()
+{
+    std::cout << std::left; // left justify output
+    std::cout << std::setw(16) << "bool:" << sizeof(bool) << " bytes\n";
+    std::cout << std::setw(16) << "char:" << sizeof(char) << " bytes\n";
+    std::cout << std::setw(16) << "short:" << sizeof(short) << " bytes\n";
+    std::cout << std::setw(16) << "int:" << sizeof(int) << " bytes\n";
+    std::cout << std::setw(16) << "long:" << sizeof(long) << " bytes\n";
+    std::cout << std::setw(16) << "long long:" << sizeof(long long) << " bytes\n";
+    std::cout << std::setw(16) << "float:" << sizeof(float) << " bytes\n";
+    std::cout << std::setw(16) << "double:" << sizeof(double) << " bytes\n";
+    std::cout << std::setw(16) << "long double:" << sizeof(long double) << " bytes\n\n";
+}
+void string_demo()
+{
+    using namespace std;
+    cout << "Enter your full name: ";
+    string name{};
+    getline(cin >> ws, name);
+    cout << "Enter your age: ";
+    int age{};
+    cin >> age;
+    int letters{static_cast<int>(name.length())};
+    cout << "Your age + length of name is: " << (letters + age) << "\n";
+}
\ No newline at end of file
diff --git a/src/io.h b/src/io.h
new file mode 100644
index 0000000..74cc367
--- /dev/null
+++ b/src/io.h
@@ -0,0 +1,8 @@
+#pragma once
+
+void add_two_numbers();
+int read_number();
+void write_answer(int x);
+void convert_char_to_ascii();
+void print_type_size_bytes();
+void string_demo();
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..b0c8dde
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,14 @@
+#include <iostream> // for std::cout
+#include "io.h"
+#include "algo.h"
+
+int main()
+{
+    // string_demo();
+    // add_two_numbers();
+    // convert_char_to_ascii();
+    print_type_size_bytes();
+    // bubble_sort_print_demo();
+
+    return 0;
+}