a.Seperate this into 3 parts- class specification, class member functions defini

Question

a.Seperate this into 3 parts- class specification, class member functions definition and test file.

b.create a member function- multiplication for complex are defined as (a+bi) * (c+di) = (a*c-b*d) + (a*d+b*c)i

c.change the main function to ask user to enter 2 complex number and display the results for addition, subtraction, and multiplication.

d.Build and run the program

#include <iostream>

using namespace std;

class Complex {

public:

Complex( double = 0.0, double = 0.0 ); // default constructor

void addition( const Complex & );

void subtraction( const Complex & );

void printComplex( void );

void setComplexNumber( double, double );

private:

double realPart;

double imaginaryPart;

};

Complex::Complex( double real, double imaginary )

{ setComplexNumber( real, imaginary ); }

void Complex::addition( const Complex &a )

{

realPart += a.realPart;

imaginaryPart += a.imaginaryPart;

}

void Complex::subtraction( const Complex &s )

{

realPart -= s.realPart;

imaginaryPart -= s.imaginaryPart;

}

void Complex::printComplex( void )

{ cout << '(' << realPart << ", " << imaginaryPart << ')'; }

void Complex::setComplexNumber( double rp, double ip )

{

realPart = rp;

imaginaryPart = ip;

}

int main()

{

Complex b( 1, 7 ), c( 9, 2 );

b.printComplex();

cout << " + ";

c.printComplex();

cout << " = ";

b.addition( c );

b.printComplex();

cout << ' ';

b.setComplexNumber( 10, 1 ); // reset realPart and imaginaryPart

c.setComplexNumber( 11, 5 );

b.printComplex();

cout << " - ";

c.printComplex();

cout << " = ";

b.subtraction( c );

b.printComplex();

cout << endl;

return 0;

}

Explanation / Answer

File Complex.h

#ifndef __COMPLEX_H    // Control inclusion of header files
#define __COMPLEX_H
#include <iostream>
using namespace std;

class Complex {
public:
   Complex( double = 0.0, double = 0.0 ); // default constructor
   void addition( const Complex & );
   void subtraction( const Complex & );
   void printComplex( void );
   void multiplication(const Complex &);
   void setComplexNumber( double, double );

private:
   double realPart;
   double imaginaryPart;
};
#endif

Complex.cpp

#include "Complex.h"
#include <iostream>
using namespace std;

Complex::Complex( double real, double imaginary )
{
    setComplexNumber( real, imaginary );
}

void Complex::addition( const Complex &a )
{
   realPart += a.realPart;
   imaginaryPart += a.imaginaryPart;
}
void Complex::subtraction( const Complex &s )
{
   realPart -= s.realPart;
   imaginaryPart -= s.imaginaryPart;
}
void Complex::printComplex( void )
{ cout << '(' << realPart << ", " << imaginaryPart << ')'; }

void Complex::multiplication(const Complex &m)
{
    this->realPart=realPart*m.realPart-imaginaryPart*m.imaginaryPart;
    this->imaginaryPart=realPart*m.imaginaryPart+imaginaryPart*m.realPart;
}
void Complex::setComplexNumber( double rp, double ip )
{
   realPart = rp;
   imaginaryPart = ip;
}


Main File

#include <iostream>
#include "Complex.h"
using namespace std;
int main()
{
   Complex b( 1, 7 ), c( 9, 2 );
   b.printComplex();
   cout << " + ";
   c.printComplex();
   cout << " = ";
   b.addition( c );
   b.printComplex();
   cout << ' ';
   b.setComplexNumber( 10, 1 );   // reset realPart and imaginaryPart
   c.setComplexNumber( 11, 5 );
   b.printComplex();
   cout << " - ";
   c.printComplex();
   cout << " = ";
   b.subtraction( c );
   b.printComplex();
    cout << endl;
   b.setComplexNumber( 7, 2 );   // reset realPart and imaginaryPart
   c.setComplexNumber( 21, 10 );
   b.printComplex();
   cout << " * ";
   c.printComplex();
   cout << " = ";
   b.multiplication( c );
   b.printComplex();
   cout << endl;
   return 0;
}

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