The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference
by Nicolai M. Josuttis, Addison-Wesley, 1999
© Copyright Nicolai M. Josuttis 1999
#include "algostuff.hpp"
using namespace std;
int main()
{
int c1[] = { 1, 2, 2, 4, 6, 7, 7, 9 };
int num1 = sizeof(c1) / sizeof(int);
int c2[] = { 2, 2, 2, 3, 6, 6, 8, 9 };
int num2 = sizeof(c2) / sizeof(int);
// print source ranges
cout << "c1: " ;
copy (c1, c1+num1,
ostream_iterator<int>(cout," "));
cout << endl;
cout << "c2: " ;
copy (c2, c2+num2,
ostream_iterator<int>(cout," "));
cout << '\n' << endl;
// sum the ranges by using merge()
cout << "merge(): ";
merge (c1, c1+num1,
c2, c2+num2,
ostream_iterator<int>(cout," "));
cout << endl;
// unite the ranges by using set_union()
cout << "set_union(): ";
set_union (c1, c1+num1,
c2, c2+num2,
ostream_iterator<int>(cout," "));
cout << endl;
// intersect the ranges by using set_intersection()
cout << "set_intersection(): ";
set_intersection (c1, c1+num1,
c2, c2+num2,
ostream_iterator<int>(cout," "));
cout << endl;
// determine elements of first range without elements of second range
// by using set_difference()
cout << "set_difference(): ";
set_difference (c1, c1+num1,
c2, c2+num2,
ostream_iterator<int>(cout," "));
cout << endl;
// determine difference the ranges with set_symmetric_difference()
cout << "set_symmetric_difference(): ";
set_symmetric_difference (c1, c1+num1,
c2, c2+num2,
ostream_iterator<int>(cout," "));
cout << endl;
}