Compilare: user.cpp: In function ‘void Zalg(int)’: user.cpp:32:16: warning: unused variable ‘xoxo’ [-Wunused-variable] bool xoxo=true; ^ user.cpp:38:20: warning: unused variable ‘te’ [-Wunused-variable] bool te=false; ^ user.cpp: In function ‘int main()’: user.cpp:51:9: warning: unused variable ‘ns’ [-Wunused-variable] int ns=s.length(); ^