这个问题到底怎么解?求助大神啊

#include<graphics.h>
#include<iostream>
#include<easyx.h>

void initGame();



int main()
{
    initGame();
    getchar();
    
    return 0;
}

void initGame()
{
    initgraph(600,500);
    
    loadimage(NULL,"背景.jpg");    
}

the wrong:C:\Users\ADMINI~1\AppData\Local\Temp\ccwGMKrC.o    In function `initGame()':
19        C:\Users\Administrator\Desktop\五子棋.cpp    undefined reference to `initgraph(int, int, int)'
21        C:\Users\Administrator\Desktop\五子棋.cpp    undefined reference to `loadimage(IMAGE*, char const*, int, int, bool)'
C:\Users\Administrator\Desktop\collect2.exe    [Error] ld returned 1 exit status

大神们

include <windows.h>少了这个头文件吧，loadimage函数没定义。