hehe, vc++ again

  
#include <vector>
#include <cstdlib>

// vector and all of the STL components are wrapped in the 

// "std" namespace, so use this to bring "std"''s identifiers

// into the current namespace

using namespace std;

int main(int argc, char** argv)
{
    // Set up a vector ("dynamic array") to initially hold 10

    // elements. We can omit this number and just do vector<int>

    // array; instead.

    vector<int> array(10);

    // fill every element in the array with 42; we find out how

    // big the array is with the size() function

    for(int i = 0; i < array.size(); ++i)
        array[i] = 42;

    // ERROR: we can''t access elements that haven''t been

    // allocated. In this example, we''d have to have constructed

    // the vector with 20 items (instead of 10 like we did), or

    // we''d have to resize it before we got here

    int x = array[19];

    // expand the array to hold 20 items

    array.resize(20);

    // since the array has been expanded, we can access element

    // 19; the expansion preserves existing elements

    int y = array[19];    

    // there''s no need to deallocate anything since a vector

    // object automatically deallocates whatever it had

    // allocated when it goes out of scope


    return EXIT_SUCCESS;
}
  

    
class myClass;
...

vector<myClass> array;