c++ 判断数组元素是否有负数(any_of)

#include <iostream>     // std::cout
#include <algorithm>    // std::any_of
#include <array>        // std::array
using namespace std;
int main () {
    array<int,> foo = {,,-,,-,,-};

    if ( any_of(foo.begin(), foo.end(), [](int i){return i<;}) )
        cout << "There are negative elements in the range.\n";

    return ;
}