Compilare: user.cpp: In function ‘int main()’: user.cpp:8:21: warning: unused variable ‘x’ [-Wunused-variable] int n,k,j=0,h,i,x,i2; ^ user.cpp:8:23: warning: variable ‘i2’ set but not used [-Wunused-but-set-variable] int n,k,j=0,h,i,x,i2; ^