定义复数类,重载+,*为复数类的成员函数,实现复数类对象的+,*运算.

#include
using namespace std;
class complex
{
public:
complex():real(0),vir(0)
{
}
complex(float a,float b):real(a),vir(b)
{
}
complex operator +(complex a);
complex operator *(complex a);
void show()
{
cout