Acc

#include <iostream>
#include <vector>

using namespace std;

template<typename T>
void Set(vector<T>& _vec, bool(*_filter)(T&), void(*_accumulator)(T&))
{
    for (T& value : _vec)
    {
        if (!_filter(value)) continue;
        _accumulator(value);
    }
};


int main()
{
    vector<float> vec = {5, 6, 7, 8, 9, 1, 2, 3};

    Set<float>(vec, [](float &a) { return a < 7; }, [](float &a) { a+=10;} );

    for (float& val : vec)
        cout << val << " ";

    return 0;
}