1 /************************************************
  2  * diff elements -- Print the differences       *
  3  *      between adjacent elements of any array. *
  4  ************************************************/
  5 #include <iostream>
  6
  7 // Any array containing pairs of values.
  8 // Ends with the sentinel -1
  9 static int array[12] =
 10 {
 11     44, 8,
 12     50, 33,
 13     50, 32,
 14     75, 39,
 15     83, 33,
 16     -1, -1
 17 };
 18
 19 // Array to hold the differences
 20 static int diff[6];
 21
 22 int main()
 23 {
 24     int i;      // Index into the array
 25
 26     // Index into the diff results
 27     int diff_index;
 28
 29     i = 0;
 30     diff_index = 0;
 31     // Difference adjacent elements of an array
 32     while (array[i] != 0)
 33     {
 34         diff[diff_index++] =
 35             array[i++] - array[i++];
 36     }
 37
 38     // Print the results
 39     for (i = 0; i < 6; ++i)
 40     {
 41         std::cout << "diff[" << i << "]= " <<
 42             diff[i] << std::endl;
 43     }
 44     return (0);
 45 }