Lower_bound() in C++ STL

#1

#include
#include
#include
using namespace std;
int main()
{
sets;
s.insert(1);
s.insert(5);
s.insert(7);
s.insert(2);
s.insert(12);
s.insert(10);
auto it = s.lower_bound(15);
cout<< *it <<endl;
return 0;
}

in the above snippet, we have to predict the output. Now, as lower_bound() will give back an iterator pointing to value not less than 15. But as there is no value >=15 it will print to the end of the set ans supposedly give out garbage value. But the answer is 6. HOW?

#2

Yes it should be garbage value, can you tell where is the answer given as 6?

#3

It is the 7th question in C++ STL QUIZ of this course.

#4

C++ STL QUIZ -1* to be precise

#5

Yeah I saw, answer should be any garbage value.

#6

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