Compilare: user.cpp: In function ‘int main()’: user.cpp:22:30: warning: unused variable ‘xi’ [-Wunused-variable] {fin>>x>>y>>n>>l;x++;y++;int xi=x;int yi=y;int is; ^ user.cpp:22:39: warning: unused variable ‘yi’ [-Wunused-variable] {fin>>x>>y>>n>>l;x++;y++;int xi=x;int yi=y;int is; ^ user.cpp:22:48: warning: unused variable ‘is’ [-Wunused-variable] {fin>>x>>y>>n>>l;x++;y++;int xi=x;int yi=y;int is; ^ user.cpp:45:17: warning: ‘imj’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<nrceva+imj/2-1<<'\n'; ^