How to generate random variable names in C++ using macros?

Question

I\'m creating a macro in C++ that declares a variable and assigns some value to it. Depending on how the macro is used, the second occurrence of the macro can override the v

Answer 1

use __COUNTER__ (works on gcc4.8, clang 3.5 and Intel icc v13, MSVC 2015)

#define CONCAT_(x,y) x##y
#define CONCAT(x,y) CONCAT_(x,y)
#define uniquename static bool CONCAT(sb_, __COUNTER__) = false