c++ set容器详解

set容器没有下标操作符，不会出现重复的元素

	vector ivec;
	for(vector::size_type ix = 0; ix!=10; ++ix)
	{
		ivec.push_back(ix);
		ivec.push_back(ix);
	}

	set iset(ivec.begin(),ivec.end());

	for(set::iterator it = iset.begin(); it!=iset.end();++it)
	{
		cout<<*it<::iterator ite = iset.find(8);
	if(ite!=iset.end())
	{
		cout<<*ite<