how to concatenate string in c++ code example

Example 1: concatenation cpp int and stirng

// with C++11
string result = name + std::to_string(age);

Example 2: 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 3: concatenate lists c++

// list::merge
#include <iostream>
#include <list>

// compare only integral part:
bool mycomparison (double first, double second)
{ return ( int(first)<int(second) ); }

int main ()
{
  std::list<double> first, second;

  first.push_back (3.1);
  first.push_back (2.2);
  first.push_back (2.9);

  second.push_back (3.7);
  second.push_back (7.1);
  second.push_back (1.4);

  first.sort();
  second.sort();

  first.merge(second);

  // (second is now empty)

  second.push_back (2.1);

  first.merge(second,mycomparison);

  std::cout << "first contains:";
  for (std::list<double>::iterator it=first.begin(); it!=first.end(); ++it)
    std::cout << ' ' << *it;
  std::cout << '\n';

  return 0;
}

Example 4: 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 5: c++ string concatenation

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

Example 6: concatenate two strings in c++

#include <iostream>
using namespace std;

int main()
{
    string s1, s2, result;

    cout << "Enter string s1: ";
    getline (cin, s1);

    cout << "Enter string s2: ";
    getline (cin, s2);

    result = s1 + s2;

    cout << "Resultant String = "<< result;

    return 0;
}