View Compilation Error

0_0_37791703_27870.cpp: In function 'void BFS(int, int)':
0_0_37791703_27870.cpp:6:23: error: 'Wx' was not declared in this scope
 #define CHECK(x,y) (x<Wx&&x>=0&&y>=0&&y<Hy)
                       ^
0_0_37791703_27870.cpp:21:7: note: in expansion of macro 'CHECK'
    if(CHECK(next.x,next.y)&&room[next.x][next.y]=='.'){
       ^
0_0_37791703_27870.cpp: In function 'int main()':
0_0_37791703_27870.cpp:31:13: error: 'Wx' was not declared in this scope
  while(cin>>Wx>>Hy){
             ^