vc++应用程序按序号调用vc++dll

如何在vc++中调用vc++dll。

在.h文件中

typedef int (*LPVAR)(char * ptr_f, char *CC);
HINSTANCE hDLL;

在.cpp文件中

hDLL = NULL;
LPVAR var;
hDLL = LoadLibrary("Pro.dll");


if( hDLL == NULL )
    AfxMessageBox("Could not load the DLL");
else
{
    var = (LPVAR)GetProcAddress(hDLL, "#2"); //2 is ordinal no
    char *ch,*a;
    ch = (char*)malloc(100*sizeof(char));
    a = (char*)malloc(10*sizeof(char));
    int c = var(ch,a);
}