find() over plain array

#include <iostream>#include <algorithm>using namespace std;int main(){    int arr[] = { 1, 2, 10, 3, 4 };    int target = 10;    auto result = find(begin(arr), end(arr), target);    if (result != end(arr))        cout << "found at index " << result-begin(arr) << endl;    else        cout << "not found" << endl;    return 0;}