How can I make it possible to output string literals?

Question

C++ / C#

For example:

#include <string>
string s = "\n"
std::cout<<s<<std::endl;

And the output should be :
\n
How to do that ?

Answer 1

And the output should be :
\n
How to do that ?

suppose once:

int main()
{
  std::string s = "\\n";
  std::cout << s << std::endl;
}

two:

int main()
{
  auto s = R"(Raw string literal\n)";
  std::cout << s << std::endl;
}

User-defined literals