Compilare: user.cpp: In member function ‘void ReadStream::move()’: user.cpp:21:11: warning: unused variable ‘readSize’ [-Wunused-variable] int readSize = fread(this->buffer, SIZE, 1, this->stream); ^ user.cpp: In member function ‘ReadStream& ReadStream::operator>>(char&)’: user.cpp:51:3: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:113:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lca.out", "w", stdout); ^ user.cpp: In constructor ‘ReadStream::ReadStream(const char*)’: user.cpp:28:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, SIZE, 1, stream); ^