1、 设计一个复数类Complex,包括实部real和虚部image,设计3个友元函数,实现两个复数的加、减和乘法运算

class Complex
{
public:
x05Complex(double r,double i):real(r),imag(i){}
x05void print();
x05friend Complex operator +(Complex,Complex);
x05friend Complex operator -(Complex,Complex);
x05friend Complex operator *(Complex,Complex);
private:
x05double real;
x05double imag;
};
void Complex::print()
{
x05cout