Compilare: user.cpp: In function ‘int main()’: user.cpp:66:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aib.in", "r", stdin); ^ user.cpp:67:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aib.out", "w", stdout); ^ user.cpp: In function ‘int search()’: user.cpp:44:80: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] int left = 1, right = (int)pow(2, ceil(log((double)n)/log((double)2))), g, mid, sum = 0; ^