在特征c++中，我如何检查一个向量的所有元素是否都在另一个向量内？

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

bool isAllElementsInVector(const std::vector<int>& vec1, const std::vector<int>& vec2) {
    return std::all_of(vec1.begin(), vec1.end(), [&](int element) {
        return std::find(vec2.begin(), vec2.end(), element) != vec2.end();
    });
}

int main() {
    std::vector<int> vec1 = {1, 2, 3, 4, 5};
    std::vector<int> vec2 = {3, 4, 5, 6, 7};

    if (isAllElementsInVector(vec1, vec2)) {
        std::cout << "All elements in vec1 are in vec2." << std::endl;
    } else {
        std::cout << "Not all elements in vec1 are in vec2." << std::endl;
    }

    return 0;
}