diff --git a/src/algo.cpp b/src/algo.cpp
deleted file mode 100644
index f13f6b4..0000000
--- a/src/algo.cpp
+++ /dev/null
@@ -1,11 +0,0 @@
-#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
deleted file mode 100644
index 52bc41f..0000000
--- a/src/algo.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#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 c8a8734..1da65ac 100644
--- a/src/io.cpp
+++ b/src/io.cpp
@@ -1,7 +1,6 @@
 #include "io.h"
 #include <iostream>
 #include <iomanip>
-
 void add_two_numbers()
 {
     int a{read_number()};
@@ -26,7 +25,6 @@ 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
@@ -38,17 +36,5 @@ 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\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";
+    std::cout << std::setw(16) << "long double:" << sizeof(long double) << " bytes\n";
 }
\ No newline at end of file
diff --git a/src/io.h b/src/io.h
index 74cc367..39c803b 100644
--- a/src/io.h
+++ b/src/io.h
@@ -4,5 +4,4 @@ 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
+void print_type_size_bytes();
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index b0c8dde..8fa3148 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,14 +1,77 @@
 #include <iostream> // for std::cout
 #include "io.h"
-#include "algo.h"
+#include <cmath>
 
+// Definition of function main()
+double get_user_double()
+{
+    std::cout << "Enter a double value: ";
+    double x{};
+    std::cin >> x;
+    return x;
+}
+char get_user_operator()
+{
+    std::cout << "Enter +, -, * or /: ";
+    char x{};
+    std::cin >> x;
+    return x;
+}
+void print_result(double a, double b, char c)
+{
+    double result{};
+    switch (c)
+    {
+    case '+':
+        result = a + b;
+        break;
+    case '-':
+        result = a - b;
+        break;
+    case '*':
+        result = a * b;
+        break;
+    case '/':
+        result = a / b;
+        break;
+    default:
+        return;
+    }
+    std::cout << a << ' ' << c << ' ' << b << " is " << result;
+}
+void task1()
+{
+    double a{get_user_double()};
+    double b{get_user_double()};
+    char c{get_user_operator()};
+    print_result(a, b, c);
+}
+
+long get_user_tower_height()
+{
+    std::cout << "Enter the height of the tower in meters: ";
+    long x{};
+    std::cin >> x;
+    return x;
+}
+void task2()
+{
+    long tower_height{get_user_tower_height()};
+    for (size_t i = 0; i < 6; i++)
+    {
+        double result{static_cast<double>(tower_height) - 9.8 * pow(static_cast<double>(i), 2) / 2};
+        if (result <= 0.0)
+            std::cout << "At " << i << " seconds, the ball is on the ground\n";
+        else
+            std::cout << "At " << i << " seconds, the ball is at height: " << result << " meters\n";
+    }
+}
 int main()
 {
-    // string_demo();
     // add_two_numbers();
     // convert_char_to_ascii();
-    print_type_size_bytes();
-    // bubble_sort_print_demo();
-
+    // print_type_size_bytes();
+    // task1();
+    task2();
     return 0;
-}
+}
\ No newline at end of file