Convert stringized hex character to std::string

Question

I have the following:

char const* code = "3D";

I need to convert this 2-digit lexical hex into a std::string, which will be a string with length of 1 (not including null terminator). I have the boost library at my disposal as well. How can I do this?

In the example above, I should have a std::string that prints "=" if properly converted.

Answer 1

I think something on this order should work:

std::istringstream buffer("3D");
int x;

buffer >> std::hex >> x;
std::string result(1, (char)x);

std::cout << result;  // should print "="