哪位大神帮忙解答一下，本人对c++一窍不通，马上就要考试了，

求大家帮忙啦，感激不尽

求大家帮忙啦，感激不尽

#include <iostream
using namespace std;
int main()
{
float(*f)(float) = [](float x)->float{
float y = 0;
if (x <= -2) return x - 2;
else if (x > 2) return (x + 2)*(x + 2);
return x * 2 - 1;
};
cout << "f(-3)=" << f(-3) << " f(1)=" << f(1) << " f(3)=" << f(3) << endl
return 0;
}

10个数字的最大值:
#include <iostream>
#include <vector>
#include <algorithm>
int main()
{
std::vector<int> vec;
for (int i = 0; i < 10; ++i) {
int input;
std::cin >> input;
vec.push_back(input);
}
std::vector<int>::iterator max = std::max_element(vec.begin(), vec.end());
std::cout << "最大元素是: " << *max << std::endl;
return 0;
}

谢谢你