Compilare: user.cpp: In function ‘int main()’: user.cpp:10:27: warning: unused variable ‘j’ [-Wunused-variable] int n,x,nrzile=0,cn,a,j,nr,z,y; ^ user.cpp:85:26: warning: ‘z’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<" "<<y<<" "<<z;} ^