OOP-SEMIII/complex.cpp at master · arjun-gangwar/OOP-SEMIII · GitHub

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#include <iostream>
using namespace std;

class complex
{
     int real;
     int img;
public:
     complex()
     {
          real=0;
          img=0;
     }
     friend complex operator+(complex&, complex&);
     friend complex operator-(complex&, complex&);
     friend complex operator*(complex&, complex&);
     friend void operator/(complex&, complex&);
     friend istream& operator>>(istream&, complex&);
     friend ostream& operator<<(ostream&, complex&);
};

int main()
{
     complex c, c1, c2;
     cin>>c1;
     cout<<c1<<endl;
     cin>>c2;
     cout<<c2<<endl;
     c = c1 + c2;
     cout<<"addition of two complex numbers: "<<endl<<c<<endl;
     c = c1 - c2;
     cout<<"subtraction of two complex numbers: "<<endl<<c<<endl;
     c = c1 * c2;
     cout<<"multiplication of two complex number: "<<endl<<c<<endl;
     cout<<"division of two complex numbers: ";
     c1/c2;
     return 0;
}

istream& operator>>(istream& din, complex& c)
{
     cout<<"enter real part: ";
     din>>c.real;
     cout<<"enter imaginary part: ";
     din>>c.img;
     cout<<"the complex number you have entered: "<<c.real<<" + i("<<c.img<<")"<<endl;
     return din;
}

ostream& operator<<(ostream& dout, complex& c)
{
     dout<<"real part: "<<c.real<<endl;
     dout<<"imaginary part: "<<c.img<<endl;
     dout<<"complex number: "<<c.real<<" + i("<<c.img<<")"<<endl;
     return dout;
}

complex operator+(complex& c1, complex& c2)
{
     complex ans;
     ans.real = c1.real + c2.real;
     ans.img = c1.img + c2.img;
     return ans;
}

complex operator-(complex& c1, complex& c2)
{
     complex ans;
     ans.real = c1.real - c2.real;
     ans.img = c1.img - c2.img;
     return ans;
}

complex operator*(complex& c1, complex& c2)
{
     complex ans;
     ans.real = (c1.real * c2.real) - (c1.img * c2.img);
     ans.img = (c1.real * c2.img) + (c1.img * c2.real);
     return ans;
}

void operator/(complex& c1, complex& c2)
{
     int a, b, c;
     a = (c1.real * c2.real) + (c1.img * c2.img);
     b = (c1.img * c2.real) - (c1.real * c2.img);
     c = (c2.real * c2.real) + (c2.img * c2.img);
     cout<<"("<<a<<"/"<<c<<") + i("<<b<<"/"<<c<<")"<<endl;
}