C++ example of 'transform'

From the CPP Reference:
#include

1. output_iterator transform( input_iterator start, input_iterator end, output_iterator result, UnaryFunction f );
2. output_iterator transform( input_iterator start1, input_iterator end1, input_iterator2 start2, output_iterator result, BinaryFunction f );

The transform algorithm applies the function f to some range of elements, storing the result of each application of the function in result.

The first version of the function applies f to each element in [start,end) and assigns the first output of the function to result, the second output to (result+1), etc.

The second version of the transform works in a similar manner, except that it is given two ranges of elements and calls a binary function on a pair of elements.

Here is an example that is modified from C++ Reference:

//Program tested on Microsoft Visual Studio 2008 - Zahid Ghadialy
//Program to show how transform works in C++

#include<iostream>
#include<vector>
#include<algorithm> //for the transform() function

using namespace std;

int increase (int i) { return ++i; }
int sum (int i, int j) { return i+j; }

int main()
{
  int someNums[] = {10,20,30,40,50}; //Array of 5 values
  //Another way to initialise a vector using the iterator constructor
  vector<int> vectorOne (someNums, someNums + sizeof(someNums) / sizeof(int)); 
  vector<int> vectorTwo;
  vector<int>::iterator it;

  cout<<"vectorOne elements are : ";
  for(unsigned int i = 0; i < vectorOne.size(); ++i)
    cout<<vectorOne[i]<<" ";
  cout<<endl;

  vectorTwo.resize(vectorOne.size()); //allocate space

  //OutputIterator transform ( InputIterator first1, InputIterator last1,
  //                           OutputIterator result, UnaryOperator op );
  std::transform(vectorOne.begin(), vectorOne.end(), vectorTwo.begin(), increase);

  cout<<"\nAfter transform with increase:"<<endl;
  cout<<"vectorOne elements are : ";
  for(unsigned int i = 0; i < vectorOne.size(); ++i)
    cout<<vectorOne[i]<<" ";
  cout<<endl;
  cout<<"vectorTwo elements are : ";
  for(unsigned int i = 0; i < vectorTwo.size(); ++i)
    cout<<vectorTwo[i]<<" ";
  cout<<endl;

  //OutputIterator transform ( InputIterator1 first1, InputIterator1 last1,
  //                           InputIterator2 first2, OutputIterator result,
  //                           BinaryOperator binary_op );
  transform (vectorOne.begin(), vectorOne.end(), vectorTwo.begin(), vectorOne.begin(), sum);

  cout<<"\nAfter transform with sum:"<<endl;
  cout<<"vectorOne elements are : ";
  for(unsigned int i = 0; i < vectorOne.size(); ++i)
    cout<<vectorOne[i]<<" ";
  cout<<endl;
  cout<<"vectorTwo elements are : ";
  for(unsigned int i = 0; i < vectorTwo.size(); ++i)
    cout<<vectorTwo[i]<<" ";
  cout<<endl;

  return 0;
}

The output is as follows: