定义一个复数类Complex,使得下面的代码能够工作

#include
using namespace std;
class Complex
{
public:
Complex(float r1,float i1);
Complex(float r1);
void add(Complex &c);
void show();
private:
float r;
float i;
};
Complex::Complex(float r1,float i1)
{
r=r1;
i=i1;
}
void Complex::add(Complex &c)
{
r+=c.r;
i+=c.i;
}
void Complex::show()
{
cout