ps_copy.cpp

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#ifdef __BCPLUSPLUS__
#include <iostream.h>
#include <vector.h>
#include <algorith.h>
#else
#include <iostream>
#include <vector>
#include <algorithm>
#endif

using namespace std;

void main(void)
{
 const int VECTOR_SIZE = 8;

 //Define a template class vector of int
 typedef vector<int> IntVector;

 //Define an interator for template class vector of strings
 typedef IntVector::iterator IntVectorIt;

 IntVector Numbers(VECTOR_SIZE);
 IntVector Result(4);

 IntVectorIt start, end, it;

 //Initialize vector Numbers
 Numbers[0] = 4;
 Numbers[1] = 10;
 Numbers[2] = 70;
 Numbers[3] = 30;
 Numbers[4] = 10;
 Numbers[5] = 69;
 Numbers[6] = 96;
 Numbers[7] = 7;

 start = Numbers.begin(); //location of first
        //element of Numbers

 end = Numbers.end();  //one past the location
        //last element of Numbers

 cout << "Before calling partial_sort_copy/n" << endl;

 //print content of Numbers
 cout << "Numbers { ";
 for (it = start; it != end; it++)
  cout << *it << " ";
 cout << "/b }/n" << endl;

 //sort the smallest 4 elemetns in the Numbers
 //and copy the results in Result
 partial_sort_copy(start, end, Result.begin(), Result.end());

 cout << "After calling partial_sort_copy/n" << endl;

 cout << "Numbers { ";
 for(it = start; it != end; it++)
  cout << *it << " ";
 cout << "/b }/n" << endl;

 cout << "Result { ";
 for(it = Result.begin(); it != Result.end(); it++)
  cout << *it << " ";
 cout << "/b }/n" << endl;
}