Compilare: user.cpp: In function ‘int main()’: user.cpp:9:13: warning: unused variable ‘j’ [-Wunused-variable] int i,n,j,nr=0,max=-1,x=1; ^ user.cpp:9:20: warning: unused variable ‘max’ [-Wunused-variable] int i,n,j,nr=0,max=-1,x=1; ^ user.cpp:9:27: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int i,n,j,nr=0,max=-1,x=1; ^