windows程序设计 第五版 的一个例子运行不了，怎么回事？

如题，例子是第三章的第一个例子，我是直接复制下来的，所以应该不是代码错误吧，是不是我的VC安装的不全？求教；
错误代码如下：
HELLOWIN.CPP
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(11) : error C2065: 'WNDCLAS' : undeclared identifier
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(11) : error C2146: syntax error : missing ';' before identifier 'wndclass'
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(11) : error C2065: 'wndclass' : undeclared identifier
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(13) : error C2228: left of '.style' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(14) : error C2228: left of '.lpfnWndProc' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(15) : error C2228: left of '.cbClsExtra' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(16) : error C2228: left of '.cbWndExtra' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(17) : error C2228: left of '.hInstance' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(20) : error C2228: left of '.hIcon' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(21) : error C2228: left of '.hCursor' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(22) : error C2228: left of '.hbrBackground' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(23) : error C2228: left of '.lpszMenuNam' must have class/struct/union type
C:\Documents and Settings\Administrator\桌面\winproject\HELLOWIN.CPP(24) : error C2228: left of '.lpszClassName' must have class/struct/union type
执行 cl.exe 时出错.

winproject.exe - 1 error(s), 0 warning(s)

标点符号问题，你可以传一份源码给我，我帮你调试

你好！ 应该是WNDCLASS wndclass; 我的回答你还满意吗~~