diff --git a/.gitignore b/.gitignore
index 42afabf..c1c1d76 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
-/build
\ No newline at end of file
+/build
+*.a
+*.o
\ No newline at end of file
diff --git a/libadd/add.c b/libadd/add.c
new file mode 100644
index 0000000..1f76448
--- /dev/null
+++ b/libadd/add.c
@@ -0,0 +1 @@
+int add(int a, int b) { return a + b; }
diff --git a/libadd/include/add.h b/libadd/include/add.h
new file mode 100644
index 0000000..465d504
--- /dev/null
+++ b/libadd/include/add.h
@@ -0,0 +1,6 @@
+#ifndef ADD_H
+#define ADD_H
+
+int add(int a, int b);
+
+#endif // ADD_H
\ No newline at end of file
diff --git a/libadd/makefile b/libadd/makefile
new file mode 100644
index 0000000..58c02a9
--- /dev/null
+++ b/libadd/makefile
@@ -0,0 +1,34 @@
+# Makefile for the add library
+# Builds a static library from the add.c file
+
+# Library name
+LIB = libadd.a
+
+# Compiler
+CC = gcc
+
+# Compiler flags
+CFLAGS = -Wall -Werror -Wextra -pedantic
+CFLAGS += -std=c99 -O3
+
+# Source file
+SRC = add.c
+
+# Object file
+OBJ = $(SRC:.c=.o)
+
+# Build the library
+$(LIB): $(OBJ)
+	ar rcs $(LIB) $(OBJ)
+
+# Build the object file
+$(OBJ): $(SRC)
+	$(CC) $(CFLAGS) -c $(SRC)
+
+format:
+	clang-format -i *.c include/*.h
+
+# Clean the object files
+clean:
+	rm -f $(OBJ)
+	rm -f $(LIB)
diff --git a/makefile b/makefile
index 419b675..9e82b8b 100644
--- a/makefile
+++ b/makefile
@@ -1,4 +1,4 @@
-# Compiler and assembler
+#dd Compiler and assembler
 CC = 		gcc
 AS = 		as
 LD = 		ld
@@ -20,6 +20,11 @@ CFLAGS += -Wno-unused-local-typedefs
 CFLAGS += -Wno-unused-const-variable
 CFLAGS += -Wno-unused-macros
 CFLAGS += -O3
+CFLAGS += -Ilibadd/include
+CFLAGS += -lm
+CFLAGS += -lglfw
+CFLAGS += -lGL
+CFLAGS += -lGLU
 CFLAGS += -g
 
 GITHASH = $(shell git rev-parse --short HEAD)
@@ -36,6 +41,9 @@ OBJS := $(patsubst src/%.c,build/%.o,$(SRCS))
 
 all: $(TARGET)
 
+libadd/libadd.a:
+	$(MAKE) -C libadd
+
 # For convenience
 run: $(TARGET)
 	@./$(TARGET)
@@ -45,7 +53,7 @@ mkbuilddir:
 	@mkdir -p build
 
 # Link the object files into the target binary
-$(TARGET): $(OBJS)
+$(TARGET): $(OBJS) libadd/libadd.a
 	@$(CC) $(CFLAGS) -o $@ $^
 	@echo -e "LD \t$^"
 
@@ -67,6 +75,7 @@ clean:
 	rm -r build
 	rm -f build/*.o
 	rm -f $(TARGET)*
+	$(MAKE) -C libadd clean --no-print-directory
 
 # Create a signed release
 tar: $(TARGET_TAR)
@@ -81,4 +90,4 @@ $(TARGET_TAR): $(TARGET)
 	strip $<
 	tar --zstd -cvf $@ $<
 
-.PHONY: all clean size mkbuilddir run tar sign
\ No newline at end of file
+.PHONY: all clean size mkbuilddir run tar sign
diff --git a/src/main.c b/src/main.c
index d0c89ee..4b4af4c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,107 @@
+#define GLFW_INCLUDE_NONE
+#include <GLFW/glfw3.h>
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include <math.h>
 #include <stdio.h>
 
-int main(int argc, const char **argv) {
-  printf("Hello, World!\n");
-  return 0;
+#define WIDTH 800
+#define HEIGHT 600
+
+// Function to draw the cube
+void drawCube() {
+    glBegin(GL_QUADS);
+
+    // Front face
+    glColor3f(1.0f, 0.0f, 0.0f);
+    glVertex3f(-1.0f, -1.0f, 1.0f);
+    glVertex3f(1.0f, -1.0f, 1.0f);
+    glVertex3f(1.0f, 1.0f, 1.0f);
+    glVertex3f(-1.0f, 1.0f, 1.0f);
+
+    // Back face
+    glColor3f(0.0f, 1.0f, 0.0f);
+    glVertex3f(-1.0f, -1.0f, -1.0f);
+    glVertex3f(-1.0f, 1.0f, -1.0f);
+    glVertex3f(1.0f, 1.0f, -1.0f);
+    glVertex3f(1.0f, -1.0f, -1.0f);
+
+    // Top face
+    glColor3f(0.0f, 0.0f, 1.0f);
+    glVertex3f(-1.0f, 1.0f, -1.0f);
+    glVertex3f(-1.0f, 1.0f, 1.0f);
+    glVertex3f(1.0f, 1.0f, 1.0f);
+    glVertex3f(1.0f, 1.0f, -1.0f);
+
+    // Bottom face
+    glColor3f(1.0f, 1.0f, 0.0f);
+    glVertex3f(-1.0f, -1.0f, -1.0f);
+    glVertex3f(1.0f, -1.0f, -1.0f);
+    glVertex3f(1.0f, -1.0f, 1.0f);
+    glVertex3f(-1.0f, -1.0f, 1.0f);
+
+    // Right face
+    glColor3f(1.0f, 0.0f, 1.0f);
+    glVertex3f(1.0f, -1.0f, -1.0f);
+    glVertex3f(1.0f, 1.0f, -1.0f);
+    glVertex3f(1.0f, 1.0f, 1.0f);
+    glVertex3f(1.0f, -1.0f, 1.0f);
+
+    // Left face
+    glColor3f(0.0f, 1.0f, 1.0f);
+    glVertex3f(-1.0f, -1.0f, -1.0f);
+    glVertex3f(-1.0f, -1.0f, 1.0f);
+    glVertex3f(-1.0f, 1.0f, 1.0f);
+    glVertex3f(-1.0f, 1.0f, -1.0f);
+
+    glEnd();
+}
+
+int main() {
+    // Initialize GLFW
+    if (!glfwInit()) {
+        fprintf(stderr, "Failed to initialize GLFW\n");
+        return -1;
+    }
+
+    // Create a windowed mode window and its OpenGL context
+    GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "Rotating Cube", NULL, NULL);
+    if (!window) {
+        glfwTerminate();
+        return -1;
+    }
+
+    // Make the window's context current
+    glfwMakeContextCurrent(window);
+
+    // Loop until the user closes the window
+    while (!glfwWindowShouldClose(window)) {
+        // Clear the framebuffer
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        
+        // Set up the view
+        glMatrixMode(GL_PROJECTION);
+        glLoadIdentity();
+        gluPerspective(45.0f, (float)WIDTH / (float)HEIGHT, 0.1f, 100.0f);
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
+        gluLookAt(3, 3, 3, 0, 0, 0, 0, 1, 0); // Eye position, look at position, up direction
+
+        // Rotate the cube
+        static double angle = 0;
+        glRotated(angle, 0, 1, 1); // Rotate around x, y, and z axes
+        angle += 0.5;
+
+        // Draw the cube
+        drawCube();
+
+        // Swap front and back buffers
+        glfwSwapBuffers(window);
+
+        // Poll for and process events
+        glfwPollEvents();
+    }
+
+    glfwTerminate();
+    return 0;
 }