Thread: processing dynamic arrays

Hello all,

While learning about dynamic arrays, I'm asked by C++ primer to do the following exercise:

Write a program to read the standard input and build a vector of ints from values that are read. Allocate an array of the same size as the vector and copy the elements from the vector into the array.

I came up with what you can see below. I would like to know, is it possible to simplify the for loop where I assign to the dynamic array? Specifically, can I do this without creating a pointer to the dynamic array while making sure I do not overflow?

Code:

#include <cstdlib>
#include <iostream>
#include <vector>
#include <iterator>

int main()
{
    using namespace std;
    
    int input;
    vector<int> iv;

    while (cin >> input) {
        iv.push_back(input);
    }
    cout << endl;

    for (vector<int>::const_iterator i = iv.begin(); i != iv.end(); ++i) {
        cout << *i << "\t";
    }
    cout << endl;

    int *p = new int[iv.size()];
    vector<int>::size_type i = 0;
    for (int *pp = p; pp != p + iv.size(); ++pp, ++i) {
        *pp = iv[i];
        cout << *(p + i) << "\t";
    }
    cout << endl;

    delete[] p;


    system("PAUSE");
	return 0;
}