Vrati vektor u kojem su prosti faktori broja n

#include <iostream>
#include <vector>

std::vector<int> ProstiFaktori(int n)
{
    std::vector<int> v;
    if(n == 1)
        v.push_back(n);
    else
    {
        int a(n), b;
        int c(a%2);
        while(c == 0)
        {
            b = a/2;
            v.push_back(2);
            a = b;
            c = a%2;
        }
        for(int i(3); i<=a; i=i+2)
        {
            int c(a%i);
            while(c == 0)
            {
                b = a/i;
                v.push_back(i);
                a = b;
                c = a%i;
            }
        }
    }
    return v;
}

int main()
{
    std::vector<int> test = ProstiFaktori(100);
    for(unsigned int i(0); i < test.size(); i++)
        std::cout << test[i] << " ";
    return 0;
}