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定义类Complex如下:class Complex { public:Complex(double r=0,doubl

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定义类Complex如下:class Complex { public:Complex(double r=0,double i=0):Real(r),Imag(i){}; friend
定义类Complex如下:
class Complex
{
public:
Complex(double r=0,double i=0):Real(r),Imag(i){};
friend Complex operator +(Complex &c1,Complex &c2);
void Display(){cout
Complex operator+(Complex& a,Complex& b)
{
static c;//函数结束时为了保留值
c.Real=a.Real+b.Real;
c.Imag=a.Imag+b.Imag;
return c;
}