我这边好多运行起来都是错误喔!这是为什么啊?
9.obj : error LNK2001: unresolved external symbol _gotoxy
9.obj : error LNK2001: unresolved external symbol _clrscr
Debug/9.exe : fatal error LNK1120: 2 unresolved externals
Error executing link.exe.
9.obj : error LNK2001: unresolved external symbol _gotoxy
9.obj : error LNK2001: unresolved external symbol _clrscr
Debug/9.exe : fatal error LNK1120: 2 unresolved externals
Error executing link.exe.