Name – Aditya Gangurde
Roll no -23
Practical no 5

Write a program in C++ to perform following operations on complex numbers
Add, Subtract, Multiply, Divide. Use operator overloading for these
operations. The objective of this assignment is to learn the concepts
operator overloading.



#include<iostream>
using namespace std;

class Complex{
    float real,img;
public:
    void read();
    void display();
    Complex operator+(Complex);
    Complex operator-(Complex);
    Complex operator*(Complex);
    Complex operator/(Complex);

};


void Complex::read()
{
    cout<<"Enter the real and imaginary values"<<endl;
    cin>>real>>img;
}


void Complex::display()
{
    int val;
    if(img>0)
        cout<<real<<"+i"<<img;
    else{

        val = -img;
        cout<<real<<"-i"<<val;
    }
}

Complex Complex::operator+(Complex c2)
{
    Complex sum;
    sum.real = real + c2.real;
    sum.img = img + c2.img;
    return sum;
}
Complex Complex::operator-(Complex c2)
{
    Complex diff;
    diff.real = real - c2.real;
    diff.img = img - c2.img;
    return diff;
}

Complex Complex::operator*(Complex c2)
{
    Complex mul;
    mul.real = (real * c2.real) - (img *c2.img);
    mul.img =  (real * c2.img) + (img * c2.real);

    return mul;
}


Complex Complex::operator/(Complex c2)
{
    Complex div;
    div.real = ((real * c2.real) + (img * c2.img)) / ((c2.real*c2.real)+(c2.img*c2.img));
    div.img = ((img * c2.real)- (real * c2.img))  / ((c2.real*c2.real)+(c2.img*c2.img));
    return div;
}


int main()
{
    Complex c1,c2,res;
    c1.read();
    c2.read();
    res  = c1+c2;
    cout<<"\n Result of addition ::"<<endl;
    res.display();

    res = c1-c2;
    cout<<"\n Result of subtraction ::"<<endl;
    res.display();


    res = c1*c2;
    cout<<"\n Result of multiplication ::"<<endl;
    res.display();

    res = c1/c2;
    cout<<"\n Result of divison ::"<<endl;
    res.display();

}



*****OUTPUT*****

  Enter the real and imaginary values
3
9
Enter the real and imaginary values
2
7

 Result of addition ::
5+i16
 Result of subtraction ::
1+i2
 Result of multiplication ::
-57+i39
 Result of divison ::
1.30189-i0