有没有一个等同于Python的c++ 'in‘关键字的关键字？

#include <iostream>
#include <vector>
#include <algorithm>

int main() {
    std::vector<int> numbers = {1, 2, 3, 4, 5};

    int target = 3;
    auto it = std::find(numbers.begin(), numbers.end(), target);

    if (it != numbers.end()) {
        std::cout << "Element found!" << std::endl;
    } else {
        std::cout << "Element not found!" << std::endl;
    }

    return 0;
}