Compilare: user.cpp: In constructor ‘T::T()’: user.cpp:127:19: warning: ‘T::h2’ will be initialized after [-Wreorder] long long h1, h2; ^ user.cpp:124:8: warning: ‘T* T::ln’ [-Wreorder] T *ln, *rn; ^ user.cpp:129:5: warning: when initialized here [-Wreorder] T(): ^ user.cpp: In constructor ‘T::T(int, int, T*, T*)’: user.cpp:126:18: warning: ‘T::sz’ will be initialized after [-Wreorder] int key, pr, sz; ^ user.cpp:124:8: warning: ‘T* T::ln’ [-Wreorder] T *ln, *rn; ^ user.cpp:132:5: warning: when initialized here [-Wreorder] T( int _key, int _pr, T* _ln, T* _rn ): ^ user.cpp: In function ‘int main()’: user.cpp:328:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < lst.size(); i ++ ) { ^ user.cpp:332:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < lst[i].size(); j ++ ) ^ user.cpp:343:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < lst.size(); i ++ ) { ^ user.cpp:346:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < lst[i].size(); j ++ ) { ^ user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:14:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^