Compilare: user.cpp: In function ‘int main()’: user.cpp:13:10: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int t,i,c,kl=0,po=0; ^ user.cpp:13:12: warning: unused variable ‘kl’ [-Wunused-variable] int t,i,c,kl=0,po=0; ^ user.cpp:13:17: warning: unused variable ‘po’ [-Wunused-variable] int t,i,c,kl=0,po=0; ^