Have macro 'return' a value

Question

I\'m using a macro and I think it works fine -

#define CStrNullLastNL(str) {char* nl=strrchr(str,\'\\n\'); if(nl){*nl=0;}}

So it works to zero out the last

Answer 1

If you really want to do this, get a compiler that supports C++0x style lambdas:

#define CStrNullLastNL(str) [](char *blah) {char* nl=strrchr(blah,'\n'); if(nl){*nl=0;} return blah;}(str)

Although since CStrNullLastNL is basically a function you should probably rewrite it as a function.