c语言编小游戏

[qq_34307166]

#include<stdio.h>
void main()
{
textcolor(15);
gotoxy(3,1);
cprintf("%c",219);
textcolor(2);
gotoxy(1,2);
cprintf("%c%c%c%c%c",219,219,219,219,219);
textcolor(15);
gotoxy(3,3);
cprintf("%c",219);
textcolor(2);
gotoxy(2,4);
cprintf("%c%c%c",219,219,219);
getch();
}
错误原因：hjkl.obj : error LNK2001: unresolved external symbol _gotoxy
hjkl.obj : error LNK2001: unresolved external symbol _textcolor、
怎么改？