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
index 1da65ac..c8a8734 100644
--- a/src/io.cpp
+++ b/src/io.cpp
@@ -1,6 +1,7 @@
 #include "io.h"
 #include <iostream>
 #include <iomanip>
+
 void add_two_numbers()
 {
     int a{read_number()};
@@ -25,6 +26,7 @@ void convert_char_to_ascii()
     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
@@ -36,5 +38,17 @@ void print_type_size_bytes()
     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";
+    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
index 39c803b..74cc367 100644
--- a/src/io.h
+++ b/src/io.h
@@ -4,4 +4,5 @@ void add_two_numbers();
 int read_number();
 void write_answer(int x);
 void convert_char_to_ascii();
-void print_type_size_bytes();
\ No newline at end of file
+void print_type_size_bytes();
+void string_demo();
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 7d4fe6f..b0c8dde 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,12 +1,14 @@
 #include <iostream> // for std::cout
 #include "io.h"
+#include "algo.h"
 
-// Definition of function main()
 int main()
 {
+    // string_demo();
     // add_two_numbers();
     // convert_char_to_ascii();
-    // print_type_size_bytes();
+    print_type_size_bytes();
+    // bubble_sort_print_demo();
 
     return 0;
-}
\ No newline at end of file
+}