显示出错 求解答 /tmp/cc2Vprd9.o: In function `main': index.cpp:(.text+0x93): undefined reference to `display(Coordinate&)' collect2: error: ld returned 1 exit status
#include <iostream>
using namespace std;
/**
* 定义Coordinate类
* 友元函数：display
* 数据成员：m_iX、m_iY
*/
class Coordinate
{
// 友元函数
friend void display(Coordinate &coor);
public:
Coordinate(int x, int y)
{
m_iX = x;
m_iY = y;
}
public:
int m_iX;
int m_iY;
};
/**
* display函数用于显示m_iX、m_iY的值
*/
void dispaly (Coordinate &coor)
{
cout << "m_iX：" << coor.m_iX << endl;
cout << "m_iY：" << coor.m_iY << endl;
}
int main(void)
{
// 实例化Coordinate对象
Coordinate coor(3,5);
// 调用display函数
display(coor);
return 0;
}
