Compilare: user.cpp: In function ‘int main()’: user.cpp:80:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int ii = 0;ii < q.size();ii++) { ^ user.cpp:84:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int jj = 0;jj < q.size() && aa;jj++) ^ user.cpp:89:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int jj = 0;jj < q.size();jj++) { ^ user.cpp:47:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.in", "r", stdin); ^ user.cpp:48:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.out", "w", stdout); ^ user.cpp:104:56: warning: ‘bstc’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << bsx + 1 << " " << bsy + 1 << "\n" << (char)bstc; ^ user.cpp:104:37: warning: ‘bsy’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << bsx + 1 << " " << bsy + 1 << "\n" << (char)bstc; ^ user.cpp:104:19: warning: ‘bsx’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << bsx + 1 << " " << bsy + 1 << "\n" << (char)bstc; ^