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#include <iostream>
using std::cout;
using std::endl;
#include <algorithm>
#include <iterator>
int main()
{
const int SIZE1 = 10, SIZE2 = 5, SIZE3 = 20;
int a1[ SIZE1 ] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
int a2[ SIZE2 ] = { 4, 5, 6, 7, 8 };
int a3[ SIZE2 ] = { 4, 5, 6, 11, 15 };
std::ostream_iterator< int > output( cout, " " );
std::copy( a1, a1 + SIZE1, output );
cout << "\n";
std::copy( a2, a2 + SIZE2, output );
cout << "\n";
std::copy( a3, a3 + SIZE2, output );
int symmetric_difference[ SIZE1 + SIZE2 ];
int *ptr = std::set_symmetric_difference( a1, a1 + SIZE1, a3, a3 + SIZE2, symmetric_difference );
cout << "set_symmetric_difference of a1 and a3 is: ";
std::copy( symmetric_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
*/
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