Concatenating strings

Question

Hi all,

I have a vector of string and I intend to join these strings into a single string, separated by a space. For example, if my vector contains the values: sample string for this example I want the output to be "sample string for this example".

Need any of your input on what is the simplest way of achieving this?

Thanks

Answer 1

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

std::vector<std::string> v;
...

std::stringstream ss;
std::copy(v.begin(), v.end(), std::ostream_iterator<std::string>(ss, " "));
std::string result = ss.str();
if (!result.empty()) {
    result.resize(result.length() - 1); // trim trailing space
}
std::cout << result << std::endl;

Answer 2

boost::join