Compilare: user.cpp: In function ‘int main()’: user.cpp:8:12: warning: unused variable ‘dir’ [-Wunused-variable] int n,i,v,dir,j,nr,xo,q,x,o; ^ user.cpp:8:21: warning: unused variable ‘xo’ [-Wunused-variable] int n,i,v,dir,j,nr,xo,q,x,o; ^ user.cpp:52:36: warning: ‘o’ may be used uninitialized in this function [-Wmaybe-uninitialized] else g<<nr/2-q<<" S"<<'\n'<<nr/2-o<<" S"; ^ user.cpp:59:11: warning: ‘q’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<nr/2-o<<" S"<<'\n'<<"0 S"; ^