Compilare: main.cpp: In member function 'void inputReader::advance()': main.cpp:25:37: 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:37:36: 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 function 'int main()': main.cpp:101:22: warning: 'bestNode' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << bestNode << " " << bestCost << "\n"; ^~~