Printing lists with commas C++

Question

I know how to do this in other languages, but not C++, which I am forced to use here.

I have a Set of Strings that I\'m printing to out in a list, and they need a co

Answer 1

This one overloads the stream operator. Yes global variables are evil.

#include 
#include 
#include 
#include 
#include 

int index = 0;
template class Cont>
std::ostream& operator<<(std::ostream& os, const Cont>& vec)
{
    if (index < vec.size()) {
        if (index + 1 < vec.size())
            return os << vec[index++] << "-" << vec;
        else
            return os << vec[index++] << vec;
    } else return os;
}

int main()
{
    std::vector nums(10);
    int n{0};
    std::generate(nums.begin(), nums.end(), [&]{ return n++; });
    std::cout << nums << std::endl;
}