// STLport regression testsuite component.

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

#include <numeric>

#include <iostream>

#ifdef MAIN 

#define adjdiff0_test main

#endif

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

using namespace std;

#endif

int adjdiff0_test(int, char**)

{

  cout<<"Results of adjdiff0_test:"<<endl;  

  int numbers[5] = { 1, 2, 4, 8, 16 };

  // To compare the results

  int failures = 0;

  int arr[5];

  int k;

  for(k =0; k < 5; k++)

  	arr[k] = numbers[k];	

  int difference[5];

  adjacent_difference(numbers, numbers + 5, (int*)difference);

  int i;

  for(i = 0; i < 5; i++)

  {

  	cout << numbers[i] << ' ';

  	//check the number in array with the initial arr

  	if(numbers[i] != arr[i])

  		failures++;

  }    

  cout << endl;

  for(i = 0; i < 5; i++)

    cout << difference[i] << ' ';

  cout << endl;

  //check the difference array

  if((difference[0] != 1) || (difference[1] != 1) ||

     (difference[2] != 2) || (difference[3] != 4) ||

     (difference[4] != 8))

     failures++;

  if (!failures)

  	   return 0;

  else

  return 1;

}