Program 1 BCA Madras University BCA Object Oriented Programming using C++ Practical Madras University Program 1 Write a class to represent a complex number which has member functions to do the following

 

BCA

Object Oriented Programming using C++ Practical

Madras University 

Program 1

Write a class to represent a complex number which has member functions to do the following a. Set and show the value of the complex number b. Add, subtract and multiply two complex numbers c. Multiplying the complex number with a scalar value 

SOURCE CODE:

#include<iostream.h>

#include<iomanip.h>

#include<conio.h>

class ComplexNumber {

private:

    double real;

    double imaginary;

public:

ComplexNumber() {

real = 0;

imaginary = 0;

    }

    void set_value(double realPart, double imaginaryPart) {

real = realPart;

imaginary = imaginaryPart;

    }

 void show_value() {

     if(imaginary<0)

cout << real << " - " << -imaginary << "i" << endl;

else

cout << real << " + " << imaginary << "i" << endl;

 }

    void add(ComplexNumber c2) {

double r = real + c2.real;

double i = imaginary + c2.imaginary;

cout<<"Sum of two Complex numbers:"<<endl;

result(r, i);

    }

    void subtract(ComplexNumber c2) {

double r = real - c2.real;

double i = imaginary - c2.imaginary;

cout<<"Difference of two Complex numbers:"<<endl;

result(r, i);

  }

    void multiply(ComplexNumber c2) {

double r = real * c2.real - imaginary * c2.imaginary;

double i = real * c2.imaginary + imaginary * c2.real;

cout<<"Multiplication of two Complex numbers:"<<endl;

result(r, i);

}

    void multiply_scalar(double scalar) {

double r = real * scalar;

double i = imaginary * scalar;

result(r, i);

}

    void result(double real, double imaginary) {

if(imaginary<0)

cout << real << " - " << -imaginary << "i" << endl;

else

cout << real << " + " << imaginary << "i" << endl;

    }

};

int main() {

    ComplexNumber c1,c2;

    double r1,r2,i1,i2,scalar;

    clrscr();

    cout<<"Enter the real and imaginary part of 1st complex number:";

    cin>>r1;

    cin>>i1;

    cout<<"Enter the real and imaginary part of 2nd complex number:";

    cin>>r2;

    cin>>i2;

    c1.set_value(r1,i1);

    c2.set_value(r2,i2);

    // Set and show value

    cout<<"Complex Numbers:"<<endl;

    c1.show_value();

    c2.show_value();

    // Add

    c1.add(c2);

    // Subtract

    c1.subtract(c2);

    // Multiply

    c1.multiply(c2);

    // Multiply with scalar

    cout<<"Enter scalar value to multiply with complex numbers: "<<endl;

    cin>>scalar;

    c1.multiply_scalar(scalar);

    c2.multiply_scalar(scalar);

     getch();

    return 0;

}

SAMPLE OUTPUT: