How to call a variadic function in C++ from a variadic function?

Question

C++ / C#

Have a function

void a(...)
{
}

Have a function

void b(std::string key,...)
{
  std::string key2 = key+"#";
  a(key2,...); // ?????
}

How to make a function call in b passing it key2 and all variable parameters passed to it? ps interested in a solution without the __ARGS__ macro

Answer 1

https://stackoverflow.com/questions/5383642/to-inv...