set-insert

////////////////////////////////////////
//      2018/04/28 19:04:02
//      set-insert

// insert elements into the set
#include <iostream>
#include <set>

using namespace std;

void print(set<int, less<int>>& s){
    set<int, less<int>>::iterator it;
    for (it = s.begin(); it != s.end(); it++){
        cout << *it << " ";
    }
    cout << endl;
}

//======================
int main(){
    int ary[] = { 1, 2, 3, 2, 3, 4, 8, 2, 5, 6 };
    set<int, less<int>> s;

    s.insert(10);
    print(s);

    s.insert(ary, ary + 5);
    print(s);

    set<int, less<int>>::iterator it = s.begin();
    s.insert(it,  20);
    print(s);

    return 0;
}

/*
OUTPUT:
    10
    1 2 3 10
    1 2 3 10 20
*/