Code:#include "stdafx.h" #include <iostream> #include <fstream> #include <cmath> using namespace std; void input_rect(double,double); double const pi = atan(1.0); int main() { int choice; double ReA, ImA; do { cout << "Complex number A: Real: " << ReA << " Imaginary: " << ImA << endl << endl; cout << "1. Enter Complex Number A in Rectangular Form \n"; cout << "2. Enter Complex Number A in Polar Form \n"; cout << "3. Enter Complex Number B in Rectangular Form \n"; cout << "4. Enter Complex Number B in Polar Form \n"; cout << "5. Add the two Complex Numbers: C = A + B \n"; cout << "6. Find the Complex Conjugate: C = A* \n"; cout << "7. Multiply the two Complex Numbers: C = AB \n"; cout << "8. Divide the two Complex Numbers: C = A / B \n"; cout << "9. Quit \n \n"; cout << "make a selection: "; cin >> choice; switch (choice) { case 1: cout << "chose 1 \n \n"; { input_rect(ReA,ImA); break; } case 2: cout << "chose 2 \n" << endl; break; case 3: cout << "chose 3 \n" << endl; break; case 4: cout << "chose 4 \n" << endl; break; case 5: cout << "chose 5 \n" << endl; break; case 6: cout << "chose 6 \n" << endl; break; case 7: cout << "chose 7 \n" << endl; break; case 8: cout << "chose 8 \n" << endl; break; } } while (choice !=9); system ("pause"); return 0; } void input_rect(double Real, double Imag) { cout << "Enter real part: "; cin >> Real; cout << "Enter Imaginary part: "; cin >> Imag; cout << endl; }