#include <iostream>
#include <sstream>

const int SIZE = 5;
using namespace std;

void reverse_string(string &);

int main() {
	double values[SIZE] = { 1, 2, 3.4, 5, 357298.1 };
	istringstream sout;

	for (int i = 0; i < SIZE; i++) {
		sout << values[i] << ", ";
	}
	string line = sout.str();
	reverse_string(line);

	cout << line << endl;
}

void reverse_string(string &str) {
	char temp;
	int end_pos;
	for (int i = 0; i < str.length() / 2; i++) {
		end_pos = str.length() - i - 1;
		temp   = str[i];
		str[i      ] = str[end_pos];
		str[end_pos] = temp;
	}
}