[thejeremy]

Make sure you include the <vector> header file (as jaeusm said).

One vector constructor consists of the following,

vector<type> yourArray(x, y);

where "type" is the type of variable that your vector will hold (int, string, etc.), and the initial vector will hold x copies of the value y. For instance, if I used the constructor

vector<int> myArray(10, 0);

myArray would initially be composed of 10 slots that all hold the value 0.

To tack on an additional value at the end of the vector, use the function call push_back.

Here is a code snippet:

vector<string> sentence(3, "hello");
sentence.push_back("world");

The result of sentence is now ["hello", "hello", "hello", "world"]
Of course, for this example, you'd have to include the header file <string> but I'm assuming you already know that