#include <vector>
#include <iostream>
using namespace std;

vector<int> sub_vector(vector <int> v){
	vector <int> sub;
	for (int i = 0; i < v.size(); i++){
		if (v[i]>0){
			sub.push_back(v[i]);
		}
	}
	return sub;
}

void display(vector <int> v){
	for (int i = 0; i < v.size(); i++){
		cout << v[i] << " ";
	}
}

int main(){
	vector<int> whole(10);
	vector<int> greatest;
	whole = { 20, -2, 10, -2, 20, -2, 10, -2, 20, -4 };
	cout << "These are the vector elements:\n";
	display(whole);
	cout << "\n\n";
	greatest = sub_vector(whole);
	cout << "These are all the positive elements in the previous vector compiled\ninto a subvector:\n";
	display(greatest);
	cout << "\n\n";
	return 0;
	// i wrote a loop that checks each element in the vector. if the vector is positive, it will be placed into a new vector.
	// if the element was negative, it was ignored.
}