IGNOU BCA 3rd sem Solved Assignment - Write a C++ program to create class named Complex to perform addition and subtraction on two complex numbers.

Write a C++ program to create class named Complex to perform addition and subtraction on two complex numbers.

Ans

#include <iostream.h>

    class Complex {

        public:

        double r; //real part

        double i; //imaginary part

        public:

        void add(Complex, Complex);

        void subtract(Complex, Complex);

        void print();

    };

    void Complex::add (Complex op1, Complex op2) {

        r = op1.r + op2.r;

        i = op1.i + op2.i;

    }

    void Complex::subtract (Complex op1, Complex op2) {

         r = op1.r - op2.r;

         i = op1.i - op2.i;

    }

    void Complex::print () {

        cout << "("<<r<<", " << i <<")";

    }

    void main () {

        Complex operand1, operand2, result;

        cout << "\nInput real part for operand one: " << endl;

        cin >> operand1.r;

        cout << "Input imaginary part for operand one: " << endl;

        cin >> operand1.i;

        cout << "Input real part for operand two: " << endl;

        cin >> operand2.r;

        cout << "Input imaginary part for operand two: " << endl;

        cin >> operand2.i;

        cout << "\nThe sum is ";

        result.add(operand1, operand2);

        result.print();

        cout << "\nThe difference is ";

        result.subtract(operand1, operand2);

        result.print();

    }

Other way is

#include<iostream.h>

#include<stdio.h>

#include<conio.h>

#include<process.h>

class complex

{

            int real;

            float image;

            public:

            void getdata()

            {

                        cout<<"\n enter the real part of the complex";

                        cin>>real;

                        cout<<"\n enter the imaginary part of the complex";

                        cin>>image;

            }

            void operator + (complex);

            void operator - (complex);

};

void complex :: operator +  (complex c1)

{

            complex temp;

            temp.real=real+c1.real;

            temp.image=image+c1.image;

            if (temp.image>=0);

            {

                        cout<<"\n complex no. after addition:";

                        cout<<temp.real<<"+"<<temp.image<<"i";

            }

            else

            {

                        cout<<"\n complex no. after addition ";

                        cout<<temp.real<<temp.image<<"i";

            }

}

void complex ::operator-(complex c1)

{

            complex temp;

            temp.real = real-c1.image;

            temp.image= image-c1.image;

            if (temp.image>=0)

            {

                        cout<<"\n complex no. after subtraction";

                        cout<<"\n temp.real<<"+"<<temp.image<<"i";

            }

            else

            {

                        cout<<"\n complex no. after subtraction";

                        cout<<temp.real<<temp.image<<"i"

            }

}

void main()

{

            clrscr();

            comp.ex c1, c2;

            int n;

            do

            {

                        cout<<"\n 1. Input data for complex no. ";

                        cout<<"\n 2. Addition of complex no. ";

                        cout<<"\n 3. Subtraction of complex no. ";

                        cout<<"\n 4. Quit";

                        cout<<"\n Enter your choice";

                        cin>>n;

                        switch(n)

                        {

                                     case1:

                                     cout<<endl<<"\n Enter the data for First Complex No......";

                                     cl.getdata();

                                     cout<<endl<<"\n Enter the data for seconds Complex No.....";

                                     c2.getdata();

                                     clrscr();

                                     break;

                                     case 2;

                                     cl+c2;

                                     getch();

                                     clrscr();

                                     break;

                                     case 3:

                                     cl-c2;

                                     getch();

                                     clrscr();

                                     brak;

                                     case 4:

                                     exit91);

                                     break;

                                    }

                        } while (n!=4);

     getch();

}

Again other way is

#include<iostream.h>

#include<conio.h>

class complex

{

int r;

int i;

public:

complex()

{ }

complex(int a,int b)

{

r=a;i=b;

}

friend complex operator+(complex,complex);

friend show(complex);

complex operator+(complex c1,complex c2)

{

complex c3;

c3.r=c1.r+c2.r;

c3.i=c1.i+c2.i;

return(c3);

}

show(complex c)

{

cout<<c.r<<"i+"<<c.i<<endl;

}

void main()

{

complex a,b,c;

clrscr();

a.complex(3,6);

b.complex(4,7);

c=a+b;

show(a);

show(b);

show(c);

getch()

}