Eroare de compilare: user.cpp: In function ‘void lee(nod)’: user.cpp:21:15: error: cannot convert ‘std::queue<_Tp, _Sequence>::empty<nod, std::deque<nod, std::allocator<nod> > >’ from type ‘bool (std::queue<nod>::)()const’ to type ‘bool’ while(!cd.empty) ^ user.cpp:21:15: error: in argument to unary ! user.cpp:34:9: error: ‘c’ was not declared in this scope c.pop(); ^ user.cpp: In function ‘int main()’: user.cpp:56:44: error: ‘c’ was not declared in this scope scanf("%d%d%d%d",&ci.l,&ci.c,&cf.l,&cf,c); ^ user.cpp:40:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("alee.in","r",stdin); ^ user.cpp:41:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("alee.out","w",stdout); ^ user.cpp:42:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.cpp:46:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^