c++ find函数

#include<iostream>
#include<algorithm>
using namespace std;
int main()
{
int ia[] = { 0,1,2,3,4,5,6 };
int *i = find(ia, ia + 7, 9);
int *j = find(ia, ia + 7, 3);
int *end = ia + 7;
if (i == end)
cout << "lose 9" << endl;
else
cout << "find" << endl;
if (j == end)
cout << "lose 3" << endl;
else
cout << "find 3" << endl;
return 0;
}