Can't add strings in C++

Question

#include 


int main()
{
    const std::string exclam = \"!\";
    const std::string message = \"Hello\" + \", world\" + exclam;
    std::cout <&l         


        

Answer 1

C++ doesn't do many of the automatic 'behind the scenes' conversations of other OO languages.

As Doug said you need to do std::string("hello") + std::string(" world"), the language doesn't do this for you.

However you can do

std::cout << "hello" << "world" << exclam;

Because std::cout knows how to print a const char[] as well as a string