Compilare: user.cpp: In member function ‘void myBitset::setSize(int)’: user.cpp:18:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (val.size () <= maxSize) val.push_back (0); ^ user.cpp: In member function ‘int myBitset::getSmallestNonZero()’: user.cpp:25:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<val.size (); i++) ^ user.cpp: In function ‘myBitset operator<<(myBitset, int)’: user.cpp:56:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=big; k<fin.val.size () && k - big < init.val.size (); k++) ^ user.cpp:56:67: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=big; k<fin.val.size () && k - big < init.val.size (); k++) ^ user.cpp: In function ‘myBitset operator>>(myBitset, int)’: user.cpp:65:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<init.val.size () - 1; k++) ^ user.cpp:68:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<fin.val.size () && k + big < init.val.size (); k++) ^ user.cpp:68:65: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<fin.val.size () && k + big < init.val.size (); k++) ^ user.cpp: In function ‘void operator|=(myBitset&, myBitset)’: user.cpp:75:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<min (x.val.size (), y.val.size ()); i++) ^ user.cpp: In function ‘int main()’: user.cpp:145:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("armate.in", "r", stdin); ^ user.cpp:146:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("armate.out", "w", stdout); ^ user.cpp:148:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d", &N, &Q); ^ user.cpp:150:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &a[i]); ^ user.cpp:156:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d", &x, &y); ^