Compilare: user.cpp: In function ‘int main()’: user.cpp:26:22: warning: integer overflow in expression [-Woverflow] v[i] = (1 << 31) - 1; ^ user.cpp:15:36: 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:16:38: 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:18:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^ user.cpp:23:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &v[i]); ^ user.cpp:51:9: warning: ‘ci’ may be used uninitialized in this function [-Wmaybe-uninitialized] poz[ci] ++; ^ user.cpp:45:26: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (poz[j] <= j * lim && v[poz[j]] < x) ^