Eroare de compilare: user.cpp: In function ‘void update(int, int, int)’: user.cpp:9:16: error: ‘n’ was not declared in this scope if(node >= n) ^ user.cpp:17:30: error: ‘n’ was not declared in this scope if((node << 1) + 1 < n) ^ user.cpp:19:24: error: ‘n’ was not declared in this scope if(node << 1 < n) ^ user.cpp: In function ‘int main()’: user.cpp:43:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("curcubeu.in", "r", stdin); ^