STL and templates

[creativeinspiration]

Hey Everybody,
Question, suppose that I want to write a function that prints out an STL vector of anything that implements a << operator. I am trying to do it like this:

template <class C>

void print(vector<C> & v)
{
for(int i = 0; i < v.size(); ++i)
{
cout << v[i] << " ";
}
}

What is wrong with this? How could I revise this to make it work?

[Benny the Guard]

This should work as long as you have an operator<< defined for class C such as

ostream& operator<< (const C & obj);

Although you probably want to do a i++ in your for loop otherwise its going to print out the wrong values (always be 1 ahead of where you want to be). You could also use iterators to process this such as:

void print(vector<C>& v)
  {
  vector<C>::interator itr;
  for (itr = v.begin (); itr != v.end (); itr++)
       cout << (*itr);
  }

One final solution is if you create a function to print a single value then you can use foreach, which calls a function for each object in a container. I like foreach but its a drag to create a function for it.

[weaknessforcats]

You can also use the copy algorithm.
[code=cpp]
copy(v.begin(), v.end(), cout);
[/code]

It does the loop for you.