Compilare: user.cpp: In function ‘int main()’: user.cpp:11:38: warning: unused variable ‘cat’ [-Wunused-variable] int n,rad,a,b,x,q,q1,len=0,aux,i,cat,test,val; ^ user.cpp:11:47: warning: unused variable ‘val’ [-Wunused-variable] int n,rad,a,b,x,q,q1,len=0,aux,i,cat,test,val; ^ user.cpp:12:40: 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:13:42: 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:14:46: 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,&q,&q1); ^