Compilare: main.cpp: In member function 'void inputReader::advance()': main.cpp:103:48: 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, inputFile ); ^ main.cpp: In constructor 'inputReader::inputReader(const char*)': main.cpp:115:44: 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, inputFile ); ^ main.cpp: In member function 'void Heap::_sift(int)': main.cpp:39:16: warning: 'son' may be used uninitialized in this function [-Wmaybe-uninitialized] while (son || ok) { ~~~~^~~~~