STL Quiz problem

#1

#include <bits/stdc++.h>
using namespace std;
int main()
{
sets;
pair<set::iterator, bool> ret;
s.insert(1);
s.insert(5);
s.insert(10);
s.insert(3);
ret = s.insert(10);
cout<<ret.second<<endl;
return 0;
}
what will be the output and how?

#2

Hey @S15
The insert function in the set returns a pair that contains set:iterator and the value bool. The insert function is used to add new elements to the set. So ret.second will have the value 10 acc. to your question.