lnk2019无法解析的外部命令"public:__thiscall" (一元运算符重载)

#include <iostream>using namespace std;// "-"的重载//“++”的重载//重载方式1：友元函数的重载 2：成员函数的重载class Coordinate{public:Coordinate(int x , int y){mx = x;my = y;};~Coordinate(){};Coordinate& operator-(){ mx = -mx; my = -my; return *this;}//friend Coordinate& operator-(Coordinate& floor);int mx;int my;};int main(void){Coordinate coor(2, 5);-coor;//coor.operator-();cout << coor.mx <<"\n"<< coor.my << endl;system("pause");return 0;}

一元操作符重载

析构函数忘了添加 {}

报错 LNK2019