Compilare: user.cpp: In function ‘int binarySearch(std::vector<int>&, int)’: user.cpp:29:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(best + (1<<step) < v.size() && v[best + (1<<step)] <= value) best += (1<<step); ~~~~~~~~~~~~~~~~~^~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:51:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &k, &s, &n); ^ user.cpp:55:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &recipes[j][i]); ^