Compilare: user.cpp: In function ‘int kthOrderStatistic(int*, int, int, int)’: user.cpp:159:6: warning: unused variable ‘i’ [-Wunused-variable] int i = partitionKthOrder(arr, left, right); ^ user.cpp: In function ‘int main()’: user.cpp:171:7: warning: unused variable ‘finalMerge’ [-Wunused-variable] int* finalMerge = new int[n]; ^ user.cpp:164:35: 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:165:37: 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:168:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:174:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &arr[i]); ^