[tutorial] print collection using std::copy()

#include <iostream>
#include <algorithm> // for copy
#include <iterator> // for ostream_iterator
#include <vector>
#include <functional>

class Employee {
public:
    Employee(const std::string _name, const std::string _last, const int _sal):
        name(_name),
        lastname(_last),
        salary(_sal ) {}

    friend std::ostream& operator<<(std::ostream&os,  const Employee& obj) {
        return os << obj.name << " "<< obj.salary;
    }

private:
    std::string name;
    std::string lastname;
    int salary;
};

int main()
{
    /* Set up vector to hold some number */
    std::vector<int> col{ 23, 23, 37, 42, 23, 23, 37 };

    /* Set up vector to hold chars a-z */
    std::vector<char> path;
    for (int ch = 'a'; ch <= 'z'; ++ch)
        path.push_back(ch);

    /* Set up vector to hold employer detail */
    std::vector<Employee> staff {
        {"Murrary", "Steve", 1000 },
        {"Dave", "Ark", 2000 },
        {"Kate", "Greg", 2000 },
        {"John", "Smith", 1000 },
        {"Jack", "Cho", 2000 }
    };

    std::copy(col.begin(), col.end(), std::ostream_iterator<int>(std::cout, " "));
    std::copy(path.begin(), path.end(), std::ostream_iterator<char>(std::cout, "\t"));
    std::copy(staff.begin(), staff.end(), std::ostream_iterator<Employee>( std::cout, "\n"));
    return 0;
}