lst-0019-book.cpp
// https://godbolt.org/z/hhhavG5he
#include <vector>
#include <iostream> // cout, endl
int main() {
std::vector squares{1,4,9,16,25}; // initialize filled
for(int number : squares) // number is one square at a time
std::cout << number << " ";
std::cout << std::endl;
}