带有不带括号的变量的C ++宏

Question

In C++ one can do something like

#define my_happy_macro(x) do_something_with(x)

Or also

#define $(x) do_something_with(x)

What I would like to do, however, is something like

#define $x do_something_with(x)

So that when I write

$x;

in my code, the preprocessor substitutes it with

do_something_with(x);

Is it possible to do something like this?

Answer 1

It is not something that the preprocessor can manage.

As an addendum to what others have said, it is really best to avoid heavy use of macros unless you really know what you are trying to do with them, and have a good reason not to simply create a function for the job.