Compilare: user.cpp: In function ‘int main()’: user.cpp:13:14: warning: unused variable ‘xt’ [-Wunused-variable] int x1=x,xt; ^ user.cpp:10:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("pocnitoare.in","r",stdin); ^ user.cpp:11:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("pocnitoare.out","w",stdout); ^ user.cpp:12:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d",&n,&a,&b,&x,&nq,&q); ^