diff --git a/task2.cpp b/task2.cpp
new file mode 100644
index 0000000..482a333
--- /dev/null
+++ b/task2.cpp
@@ -0,0 +1,58 @@
+  #include <GLFW/glfw3.h>
+
+// Function prototype for the window size callback
+void framebuffer_size_callback(GLFWwindow* window, int width, int height);
+
+int main(void)
+{
+    GLFWwindow* window;
+
+    /* Initialize the library */
+    if (!glfwInit())
+        return -1;
+
+    /* Create a windowed mode window and its OpenGL context */
+    window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
+    if (!window)
+    {
+        glfwTerminate();
+        return -1;
+    }
+
+    /* Set the window size callback */
+    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+
+    /* Make the window's context current */
+    glfwMakeContextCurrent(window);
+
+    /* Loop until the user closes the window */
+    while (!glfwWindowShouldClose(window))
+    {
+        /* Render here */
+        glClear(GL_COLOR_BUFFER_BIT);
+
+        /* Swap front and back buffers */
+        glfwSwapBuffers(window);
+
+        /* Poll for and process events */
+        glfwPollEvents();
+    }
+
+    glfwTerminate();
+    return 0;
+}
+
+void framebuffer_size_callback(GLFWwindow* window, int width, int height)
+{
+    // Calculate the desired aspect ratio
+    float aspectRatio = 4.0f / 3.0f;
+
+    // Calculate the new width and height based on the aspect ratio
+    int newWidth = width;
+    int newHeight = static_cast<int>(width / aspectRatio);
+
+    // Adjust the viewport to maintain the aspect ratio
+    int xOffset = 0;
+    int yOffset = (height - newHeight) / 2;
+    glViewport(xOffset, yOffset, newWidth, newHeight);
+}
diff --git a/task3.cpp b/task3.cpp
new file mode 100644
index 0000000..4c8485e
--- /dev/null
+++ b/task3.cpp
@@ -0,0 +1,67 @@
+    #include <GLFW/glfw3.h>
+
+const int MIN_WIDTH = 200;
+const int MIN_HEIGHT = 150;
+const int MAX_WIDTH = 1920;
+const int MAX_HEIGHT = 1080;
+
+void framebuffer_size_callback(GLFWwindow* window, int width, int height)
+{
+    // Enforce minimum and maximum sizes
+    int newWidth = width;
+    int newHeight = height;
+
+    if (newWidth < MIN_WIDTH)
+        newWidth = MIN_WIDTH;
+    if (newHeight < MIN_HEIGHT)
+        newHeight = MIN_HEIGHT;
+    if (newWidth > MAX_WIDTH)
+        newWidth = MAX_WIDTH;
+    if (newHeight > MAX_HEIGHT)
+        newHeight = MAX_HEIGHT;
+
+    // Set the new window size
+    glfwSetWindowSize(window, newWidth, newHeight);
+
+    // Adjust the viewport to match the new size
+    glViewport(0, 0, newWidth, newHeight);
+}
+
+int main(void)
+{
+    GLFWwindow* window;
+
+    /* Initialize the library */
+    if (!glfwInit())
+        return -1;
+
+    /* Create a windowed mode window and its OpenGL context */
+    window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
+    if (!window)
+    {
+        glfwTerminate();
+        return -1;
+    }
+
+    /* Make the window's context current */
+    glfwMakeContextCurrent(window);
+
+    /* Set the framebuffer size callback */
+    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+
+    /* Loop until the user closes the window */
+    while (!glfwWindowShouldClose(window))
+    {
+        /* Render here */
+        glClear(GL_COLOR_BUFFER_BIT);
+
+        /* Swap front and back buffers */
+        glfwSwapBuffers(window);
+
+        /* Poll for and process events */
+        glfwPollEvents();
+    }
+
+    glfwTerminate();
+    return 0;
+}