Yes, they are.
Mostly dentists' offices, though.
Answer:
i don't want ur email but here's a joke more like a riddle: I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I?
answer an echo
Explanation:
You could do it like this (example for n=5).
int n = 5;
int total = 0;
for (int k = 1; k <= n; k++) total += k*k*k;
