4. What is the output of the program below?

#include

main()

{

int n = 3;

while (n >= 0)

{

cout << n * n << endl;

--n;

}

cout << n << endl;

while (n < 4)

cout << ++n << endl;

cout << n << endl;

while (n >= 0)

cout << (n /= 2) << endl;

return 0;}