// STLport regression testsuite component.

// To compile as a separate example, please #define MAIN.

#include <vector>

#include <numeric>

#include <iterator>

#include <iostream>

#ifdef MAIN 

#define adjdiff1_test main

#endif

#if !defined (STLPORT) || defined(__STL_USE_NAMESPACES)

using namespace std;

#endif

int adjdiff1_test(int, char**)

{

    cout<<"Results of adjdiff1_test:"<<endl;

  //declaring the resultant values in an array for comparison

  int compare_v[10] = {0, 1, 4, 9, 16, 25, 36, 49, 64, 81};  

  int compare_res[10] =  {0, 1, 3, 5, 7, 9, 11, 13, 15, 17};

  int failures = 0;  

  vector <int> v(10);

  for(int i = 0; i < v.size(); i++)

    v[i] = i * i;

  vector <int> result(v.size());

  adjacent_difference(v.begin(), v.end(), result.begin());

  ostream_iterator<int> iter(cout, " ");

  // vector<int>::iterator iter;

  copy(v.begin(), v.end(), iter);

  cout << endl;

  copy(result.begin(), result.end(), iter);

  cout << endl; 

  //compare the results

  for(int i = 0; i < result.size(); i++)

  {

  	if(result[i] != compare_res[i])	

  		failures++;

  }

  for(int j = 0; j < v.size(); j++)

  {

  	if(v[j] != compare_v[j])

  		failures++;

  }

  if (!failures)

  	  return 0;

  else

   return 1;

}