Compilare: user.cpp: In member function ‘char Scanner::next()’: user.cpp:37:51: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer_, 1, buffer_size_, file_); ^ user.cpp: In function ‘int main()’: user.cpp:65:29: warning: ‘end’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << start << " " << end << " " << worst; ^ user.cpp:65:13: warning: ‘start’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << start << " " << end << " " << worst; ^