#define trace(...) doesn't work c++

i have following preprocessor divective:

#ifndef ndebug
#define snippet printf
#else
#define trace(...)
#endif

and instance use is:

trace("trace: parameter = %i\n", param);

in c works ideally good i build both debug redeem versions, nonetheless c++ compiler emits following:

warning: unfair impression macro parameter name

error: badly punctuated parameter list `#define'

and points warning blunder 'trace(...)' directive.

how c++ correctly?