Compilare: user.cpp: In function ‘tree* updateTree(tree*, int, int, int, int)’: user.cpp:39:28: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (node->left != NULL && node->left->position >= pos || member <= mid) { ^ user.cpp:43:29: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (node->right != NULL && node->right->position >= pos || member > mid && member <= node->dr) { ^ user.cpp: In function ‘int main()’: user.cpp:76:28: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(in, "r", stdin); ^ user.cpp:77:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(out, "w", stdout); ^ user.cpp:80:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:85:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &pos); ^