#include
class Complex
{
public:
Complex(){real=0;imag=0;}
Complex(double r){real=r;imag=0;}
Complex(double r,double i){real=r;imag=i;}
friend Complex operator+ (Complex &c1,Complex &c2);
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private:
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double imag;
};
Complex operator+ (Complex &c1,Complex &c2)
{return Complex(c1.real+c2.real, c1.imag+c2.imag);}
void Complex::display()
{cout |