Determine elements in set A that are not in set B and elements of set B that are not in set A : set_symmetric_difference « STL Algorithms Merge « C++ Tutorial

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C++ Tutorial » STL Algorithms Merge » set_symmetric_difference 
28.6.2.Determine elements in set A that are not in set B and elements of set B that are not in set A
#include <iostream>
using std::cout;
using std::endl;

#include <algorithm>
#include <iterator>

int main()
{
   const int SIZE1 = 10, SIZE2 = 5, SIZE3 = 20;
   int a1SIZE1 12345678910 };
   int a2SIZE2 4567};
   int a3SIZE2 4561115 };
   std::ostream_iterator< int > outputcout, " " );

   std::copya1, a1 + SIZE1, output );
   cout << "\n";
   std::copya2, a2 + SIZE2, output );
   cout << "\n";
   std::copya3, a3 + SIZE2, output );

   int symmetric_differenceSIZE1 + SIZE2 ];

   int *ptr = std::set_symmetric_differencea1, a1 + SIZE1, a3, a3 + SIZE2, symmetric_difference );
   cout << "set_symmetric_difference of a1 and a3 is: ";
   std::copysymmetric_difference, ptr, output );

   return 0;
}
1 2 3 4 5 6 7 8 9 10
4 5 6 7 8
4 5 6 11 15 set_symmetric_difference of a1 and a3 is: 1 2 3 7 8 9 10 11 15
28.6.set_symmetric_difference
28.6.1.Illustrate set_symmetric_difference
28.6.2.Determine elements in set A that are not in set B and elements of set B that are not in set A
28.6.3.Determine difference the ranges with set_symmetric_difference()
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