how to concat string in c++ code example

Example 1: how to concatinate two strings in c++

#include <iostream>
#include <cstdlib>

std::string text = "hello";
std::string moretext = "there";
std::string together = text + moretext;
std::cout << together << std::endl;

>> hello there

Example 2: concat string in c++

#include <iostream>
#include <sstream>

int main() {
  std::string value = "Hello, " + "world!";
  std::cout << value << std::endl;

  //Or you can use ostringstream and use integers too
  //For example:

  std::ostringstream ss;
  ss << "This is an integer" << 104;
  std::cout << ss.str() << std::endl;
}

Example 3: c++ string concatenation

string first_name = "foo"
string last_name = "bar"
std::cout << first_name + " " + last_name << std::endl;