vec2csv.cpp

#include <iostream>
#include <algorithm>
#include <iterator>
#include <vector>
#include <sstream>

template <typename T>
std::string to_csv(const std::vector<T>& vec) {
	std::stringstream ss;
	std::copy(vec.begin(),vec.end()-1,std::ostream_iterator<T>(ss,","));
	ss << vec.back();
	return ss.str();
}

int main() {
	std::vector<int> a = {0,1,2,3};
	std::vector<double> b = {1,1,2,3,5};
	
	std::cout << to_csv(a) << std::endl;
	std::cout << to_csv(b) << std::endl;
	
	return 0;
}