Compilare: user.cpp: In function ‘int main()’: user.cpp:23:24: warning: unused variable ‘d’ [-Wunused-variable] int t = strlen(s) - 1,d=t,i=0,q=-1; ^ user.cpp:23:32: warning: unused variable ‘q’ [-Wunused-variable] int t = strlen(s) - 1,d=t,i=0,q=-1; ^