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;
}