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 newline in a string, really its used to chop off the linebreak when it gets left on by fgets.

So, I'm wondering if I can "return" a value from the macro, so it can be called like

```

func( CStrNullLastNL( cstr ) ) ;

```

Or will I have to write a function