introduction of operator overloading

Author: georgecatalin

Learn_CPP_Programming_Deep_Dive/Section 12 Operator Overloading/Intro_to_operator_overloading/main.cpp

@@ -0,0 +1,54 @@
+#include <iostream>
+
+using namespace std;
+
+class Complex
+{
+    public:
+        int real;
+        int imaginary;
+
+        Complex(int r = 0, int i = 0) : real(r), imaginary(i)   //here i am using member initialization lists instead of body assignation
+        {
+            cout<<"Parameterized constructor appelead to here -> real part "<<this->real<<" imaginary part "<<this->imaginary<<endl;;
+        }
+
+        /* when defining overloaded operator we offer a new functionality to an operator so that it fits new user defined data types */
+        Complex add(Complex c)
+        {
+            Complex temp;
+            temp.real = real + c.real;
+            temp.imaginary = imaginary + c.imaginary;
+
+            return temp;
+        }
+
+        /* By replacing the names of the functions to "operator+", "operator-" whatsoever we achieve operator overloading */
+        Complex operator+(Complex c)
+        {
+            Complex temp;
+            temp.real = real + c.real;
+            temp.imaginary = imaginary + c.imaginary;
+
+            return temp;
+        }
+
+        ~Complex()
+        {
+            cout<<"This is the destructor of this class"<<endl;
+        }
+};
+
+
+int main(void)
+{
+    Complex c1(1953,1954), c2(1977,1978), c3,c4;
+
+    c3 = c1.add(c2);
+    c4 = c1 + c2;
+
+    cout<<"C3 ="<<c3.real<<"+ i* "<<c3.imaginary<<endl;
+    cout<<"C4 ="<<c4.real<<"+ i* "<<c4.imaginary<<endl;
+
+    return 0;
+}