#include <iostream>
#include <vector>
 
void askForVector(std::vector<int> * vector);
 
int main()
{
	std::vector<int> vector;
	int size;
	askForVector(&vector);
	std::cout << "\nsize: " << vector.size() << std::endl;
	std::cout << vector.at(0);
 
}
 
 
void askForVector(std::vector<int> * vector)
{
	int size;
	std::cout << "please insert the size of vector to order: ";
	std::cin >> size;
 
	vector->resize(size);
 
	for (int i = 0; i<size; i++){
		std::cout << "please insert a value for the " << i + 1 << " position: ";
		std::cin >> (*vector)[i];
	}
 
	for (int j : *vector)
		std::cout << ":" << j;
	std::cout << ":\n";
}

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