Compilare: main.cpp: In function 'int main()': main.cpp:17:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("numere8.in", "r", stdin); ^ main.cpp:18:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("numere8.out", "w", stdout); ^ main.cpp:23:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ main.cpp:56:21: warning: 'subset2' may be used uninitialized in this function [-Wmaybe-uninitialized] if (pows[i] & subset2) printf("%d ", v[i]); ~~~~~~~~^~~~~~~~~ main.cpp:52:21: warning: 'subset1' may be used uninitialized in this function [-Wmaybe-uninitialized] if (pows[i] & subset1) printf("%d ", v[i]); ~~~~~~~~^~~~~~~~~