Compilare: user.cpp: In function ‘int query1(int, int, int, int, int)’: user.cpp:124:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (p > r || u < r && p > u || l > r) return 0; ^ user.cpp: In function ‘int query(int, int, int, int, int)’: user.cpp:109:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:151:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eliminare.out","w",stdout); ^