Thread: why not working?

Code:

#include<vector>
#include<cmath>
#include<iostream>






int main()
{
    std::vector<int> ints{ 0, 1, 2, 3, 4, 5 };
    auto even = [](int i) { return i % 2 == 0;  };
    auto square = [](int i) { return i * i;  };


    for (int i : ints | std::views::filter(even) |
        std::views::transform(square)) {
        std::cout << i << ' ';
    }
}

It says two errors, but I did the example straight from the book...