#ifdef inside #define

Question

I am trying to write something like this:

#define COV_ON(x) \\
                #ifdef COVERAGE_TOOL \\
                    _Pragma (COVERAGE #x)
                     


        

Answer 1

You cannot. But you can swap #ifdef and #define:

#ifdef COVERAGE_TOOL
#   define COV_ON(x) _Pragma (COVERAGE #x)
#else
#   define COV_ON(x)
#endif