#include<iostream>#include<cmath>#include<windows.h>#include<stdio.h>#include"Complex.h"#define pi 3.14#define Radian(pi,Angle) ((pi*Angle)\180)class Complex{ private : double real; double imag; double Radian; double Angle; public : Complex() { real=0,imag=0,Radian=0,Angle=0; } Complex(double r,double i,double j,double h) { real=r; imag=i; Radian=j; Angle=h; } Complex operator+(Complex & c2); Complex operator*(Complex & c2); friend ostream& operator << (ostream&,Complex&); friend istream& operator << (istream&,Complex&); void display(); void display2(); operator double(); operator int();};Complex Complex::operator +(Complex &c2){ Complex c; c.real=((real*cos (Radian))+(c2.real*cos (c2.Radian))); c.imag=((real*sin (Radian))+(c2.real*sin (c2.Radian))); return c;}Complex Complex::operator *(Complex &c2)