Question

How to copy all symmetric place different numbers from two int arrays into third int array in C++

Answer 1

#include <iostream>
#include <algorithm>
#include <iterator>

using std::cout;
using std::endl;

#define SIZE1 10
#define SIZE2 7

int main()
{
	int arr1[SIZE1] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
	int arr2[SIZE2] = { 0, 2, 2, 4, 5, 5, 9 };

	int diff[SIZE1 + SIZE2];

	int *p = std::set_symmetric_difference(arr1, arr1 + SIZE1, arr2, arr2 + SIZE2, diff);

	std::ostream_iterator<int> output(cout, " ");
	std::copy(diff, p, output);

	cout << endl;

	return 0;
}

/*
run:

1 2 3 5 6 7 8

*/

 

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