初学VC++的，照着教程书把代码一字不漏的打进编译器，却说缺右括号和逗号，不管用DEV C++还是VC++都这样，怎么回事？？
代码：
#include<windows.h>
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,
int nCmdShow){
WNDCLASS wndclass;
HWND hwnd;
MSG msg;
wndclass.style=CS_HREDRAW|CS_VREDRAW;
wndclass.lpfnWndProc;
wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hInstance=hInstance;
wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName=NULL;
wndclass.lpszClassName="qwerty";
if(!RegisterClass(&wndclass)) return FALSE;
hwnd=CreateWindow("123","456",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,CW_USEDEFAULT,
CW_USEDEFAULT,CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);
ShowWindow(hwnd,nCmdShow);
UpdateWindow(hwnd);
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM 45 lParam)
{
switch (message)
{
case WM_PAINT:
HDC hdc;
PAINTSTRUCT ps;
hdc=BeginPaint(hwnd,&ps);
TextOut(hdc,10,20,"asdasdadas",28);
EndPaint(hwnd,&ps);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd,message,wParam,lParam);
}