Compilare: user.cpp: In function ‘int main()’: user.cpp:150:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < cells[i].size(); ++j) { ^ user.cpp:167:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (cnt[dad] == cellsZero + cells[i].size()) { ^ user.cpp: In function ‘void citeste(int&)’: user.cpp:38:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIM, stdin), poz = 0; ^ user.cpp:43:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIM, stdin), poz = 0; ^ user.cpp: In function ‘int main()’: user.cpp:95:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("unlock.in", "r", stdin); ^