Compilare: user.cpp: In function ‘int main()’: user.cpp:29:8: warning: unused variable ‘k’ [-Wunused-variable] int n,k,cf,i,x,p=0; ^ user.cpp:29:10: warning: unused variable ‘cf’ [-Wunused-variable] int n,k,cf,i,x,p=0; ^ user.cpp:29:15: warning: unused variable ‘x’ [-Wunused-variable] int n,k,cf,i,x,p=0; ^