Compilare: user.cpp: In function ‘int main()’: user.cpp:18:54: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(dq.back() != max && dq.back() < x && dq.front() > x || ^ user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &n); ^ user.cpp:14:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &x); ^