OOP Conplex number

#include <iostream>
using namespace std;

class complex
{
public:
float real,imag;
complex()
{
real=0;imag=0;
}
complex operator+(complex c)
{
complex temp;
temp.real=real+c.real;
temp.imag=imag+c.imag;
return(temp);
}
complex operator*(complex c)
{
complex temp;
temp.real=(real*c.real)-(imag*c.imag);
temp.imag=(real*c.imag)+(imag*c.real);
return(temp);
}
friend istream& operator>>(istream &inn,complex &c1)
{
inn>>c1.real>>c1.imag;
return inn;
}
friend ostream& operator<<(ostream &outt,complex &c1)
{
outt<<c1.real<<" "<<"i"<<c1.imag;
return outt;
}
};
int main()
{
complex c1,c2,c3;
cout << "\n Enter Real & Imaginary Part for 1st Object=";
cin>>c1;
cout << "\n Enter Real & Imaginary Part for 2nd Object=";
cin>>c2;

cout<<"\n Addition of Complex Number is =";
c3=c1+c2;
cout<<c3;
cout<<"\n Multiplication is = ";
c3=c1*c2;
cout<<c3;

return 0;
}