#include <iostream> //cout for printing
#include <algorithm> //for_each defined here

//create the function (print the square)
void print_square(int i) {
  std::cout << i*i << " ";
}

int main() {
  //create the array
  int ary[]={1,2,3,4,5};
  //stl for_each
  std::for_each(ary,ary+5,print_square);
  return 0;
}
//prints 1 4 9 16 25