C++的vector居然没有find成员函数啊， 那就用泛型find吧

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main()
{
	vector<int> v;
	v.push_back(1);
	v.push_back(2);
	v.push_back(3);	
	
	if( find(v.begin(), v.end(), 1) == v.end())
	{
		cout << "no1" << endl;
	}
	
	if( find(v.begin(), v.end(), 12) == v.end())
	{
		cout << "no2" << endl;
	}
	
    return 0;
}#include <iostream>
#include <vector>
#include