add: cpp-programming-ques 06_operator friend 11

Author: webwithaman

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+  "files.associations": {
+    "iostream": "cpp"
+  }
+}

06_operator_overloading_and_friend_function/11_insertion_extraction_for_complex.cpp

@@ -0,0 +1,93 @@
+// // Write a C++ program to overload unary operators that is increment and decrement.
+
+// // Header files
+#include <iostream>
+#include <conio.h>
+
+// // use namespace
+using namespace std;
+
+// // define class Complex
+class Complex
+{
+
+private:
+    // // instance member variables
+    double real;
+    double imag;
+
+public:
+    // // constructors
+    Complex()
+    {
+        real = imag = 0;
+    }
+
+    Complex(double r)
+    {
+        real = imag = r;
+    }
+
+    Complex(double r, double i)
+    {
+        real = r;
+        imag = i;
+    }
+
+    // // instance member function to set compelx number
+    void setData(double r, double i)
+    {
+        real = r;
+        imag = i;
+    }
+
+    // // instance member function to display compelx number
+    void showData()
+    {
+        cout << "\n"
+             << real << " + " << imag << "i" << endl;
+    }
+
+    // // overload insertion (<<) operator
+    friend Complex operator<<(ostream &, Complex &);
+
+    // // overload extraction (>>) operator
+    friend Complex operator>>(istream &, Complex &);
+};
+
+// // overload insertion (<<) operator
+Complex operator<<(ostream &temp, Complex &c)
+{
+    cout << "\n"
+         << c.real << " + " << c.imag << "i" << endl;
+    return c;
+}
+
+// // overload extraction (>>) operator
+Complex operator>>(istream &temp, Complex &c)
+{
+    cout << "\nEnter Real => ";
+    cin >> c.real;
+    cout << "\nEnter Imaginary => ";
+    cin >> c.imag;
+    return c;
+}
+
+// // Main Function Start
+int main()
+{
+    Complex c1; // create object of Complex
+
+    // // Get complex number
+    cout << "\n>>>>>>>> Enter Complex Number <<<<<<<<<\n";
+    cin >> c1;
+
+    // // display complex number
+    cout << "\n>>>>>>>> Complex Number <<<<<<<<<";
+    cout << c1;
+
+    cout << endl; // Add new line
+    getch();
+    return 0;
+}
+// // Main Function End