add elemt to set cpp code example
Example: c++ set add element
#include <iostream>
#include <set>
int main ()
{
std::set<int> myset;
std::set<int>::iterator it;
std::pair<std::set<int>::iterator,bool> ret;
for (int i=1; i<=5; ++i) myset.insert(i*10);
ret = myset.insert(20);
if (ret.second==false) it=ret.first;
myset.insert (it,25);
myset.insert (it,24);
myset.insert (it,26);
int myints[]= {5,10,15};
myset.insert (myints,myints+3);
std::cout << "myset contains:";
for (it=myset.begin(); it!=myset.end(); ++it)
std::cout << ' ' << *it;
std::cout << '\n';
return 0;
}