Compilare: user.cpp: In function ‘int RandomizedHoarePartition(int*, int, int)’: user.cpp:20:84: warning: operation on ‘*(sequence + ((sizetype)(((unsigned int)j) * 4u)))’ may be undefined [-Wsequence-point] sequence[i] = (sequence[i] ^ sequence[j]) ^ (sequence[j] = sequence[i]); ^ user.cpp: In function ‘int main()’: user.cpp:35:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.in", "r", stdin); ^ user.cpp:36:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.out", "w", stdout); ^ user.cpp:38:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:41:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &myArray[i]); ^