set_example.cpp

#include <set>
#include <iostream>

struct MyStruct
{
	int kk;
	
  bool operator<(const MyStruct & right) const
	{
		return kk > right.kk;
	}
};

struct MyStructCmp
{
	bool operator()(const MyStruct& left, const MyStruct&  right)
	{
		return left.kk > right.kk;
	}
};

int main(int argc, char* argv[])
{
	//std::set<MyStruct> ss;
	std::set<MyStruct, MyStructCmp> ss;

	for (int i = 0; i < 100; i++)
	{
		MyStruct ms;
		ms.kk = i;
		ss.insert(ms);
	}

	for (auto it=ss.begin(); it != ss.end(); ++it)
	{
		std::cout << it->kk << std::endl;
	}
	return 0;
}