Answers for "how to concat string in cpp"

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;
}

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

cpp concatenate methods

string first_name { "Time" };
    string second_name { "Machine" };
    char first_n[100] = { "Hello" };
    char second_n[100] = { "World" };

    // METHOD 1: uses <string> header
    cout << first_name + second_name << endl;
    // METHOD 2: uses <cstring> header
    cout << strcat(first_n, second_n) << endl;
    // METHOD 3: uses <string> header
    cout << first_name.append(second_name) << endl;