How to build char?

[Putarda]

How can I make my char like this?

const double version_num_ = 1.0;

const char *version_ = "v" + version_num_;

I am getting an error which says "expression must have integral or unscoped enum type"
Thanks :)

[AbstractionAnon]

Easiest way is with a stringstream.

#include <sstream>

  std::stringstsream ss;
  char * version;

  ss << "v" << 1.0;
  version = ss.str().c_str();

[Putarda]

But my const char is a class member. Is there another way? Thanks.
*NEVERMIND I FOUND A WAY.*
I just did this...
const char *version_ = "v1.0";