Compilare: user.cpp: In function ‘int main()’: user.cpp:130:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] lR = lR + dLin[dir[l][c]]; ^ user.cpp:131:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] cR = cR + dCol[dir[l][c]]; ^ 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); ^