diff --git a/OOP/test.cpp b/OOP/test.cpp
index 1c7286a..fcddd09 100644
--- a/OOP/test.cpp
+++ b/OOP/test.cpp
@@ -1,40 +1,52 @@
 #include <iostream>
 
-class Date {
-private:
-    int d, m, y;
+class Complex {
+protected:
+    int real, im;
 
 public:
-    Date() throw();
+    Complex();
+    Complex(int real, int im);
+    Complex(Complex &other);
 
-    Date(int, int, int);
-    
-    ~Date();
-
-    void out();
+    void operator=(Complex &other);
+    Complex& operator+(Complex &other);
+    void display() {
+        std::cout << this->real << "+" << this->im << "i" << std::endl;
+    }
 };
 
-Date::Date() throw() {
-    this->d = 0;
-    this->m = 0;
-    this->y = 0;
-    std::cout << "Running constructor" << std::endl;
+Complex::Complex() {
+    this->real = 0;
+    this->im = 0;
 }
 
-Date::Date(int date, int month, int year) {
-    this->d = date;
-    this->m = month;
-    this->y = year;
+Complex::Complex(int newReal, int newIm) {
+    this->real = newReal;
+    this->im = newIm;
 }
 
-void Date::out() {
-    std::cout << this->d << "/" << this->m << "/" << this->y << std::endl;
+Complex::Complex(Complex &other) {
+    this->real = other.real;
+    this->im = other.im;
+}
+
+void Complex::operator=(Complex &other) {
+    this->real = other.real;
+    this->im = other.im;
+}
+
+Complex& Complex::operator+(Complex &other) {
+    Complex tmp(this->real + other.real, this->im + other.im);
+    return tmp;
 }
 
 int main() {
-    Date aDate;
-    Date bDate(3, 2, 4);
-    aDate.out();
-    bDate.out();
+    Complex i1(1,2);
+    Complex i2;
+    int a[3][5] = {0};
+    int (*ptr)[5] = (int(*)[5]) a[3];
+    i2 = i1 + i1;
+    i2.display();
     return 0;
 }
\ No newline at end of file