number sorting

#include "stdafx.h"
#include <fstream>
#include <iostream>
#include <string>
#include <vector>

int main(int argc, char *argv[])
{
    std::ifstream stream(argv[1]);
    std::string line;

    std::vector<int> quantity_of_numbers(1000, 0);

    int number_count;

    while (getline(stream, line))
    {
        int number_to_sort = std::stoi(line);

        quantity_of_numbers[number_to_sort]++;
    }

    for (int i = 0 ; i < (quantity_of_numbers.capacity()) ; ++i)
    {
        number_count = quantity_of_numbers[i];

        for (int j = 0; j < number_count; ++j)
        {
            std::cout << i << std::endl;
        }
    }

    return 0;
}