Replacing C/C++ with LISP.

Consider the following way to use Common Lisp in place of C/C++, without any custom reader macros:

(to main int:arg char:argv
  ! printf "Hello, World!"
  ! return 0
  )

I.e. packages take role of builtin types and structs, also containing definition for overloadable `+` and `-` and template generics, so a compiler could be implemented without much fuzz, using already present Common Lisp framework.

It would also look much clearer than standard C/C++:
int main(int argc, char **argv) {
  printf ("Hello, World!");
  return 0;
}

My code doesnt compile!

  failed AVER: (NULL CURRENT)
This is probably a bug in SBCL itself. (Alternatively, SBCL
might have been corrupted by bad user code, e.g. by an undefined
Lisp operation like (FMAKUNBOUND 'COMPILE), or by stray pointers
from alien code or from unsafe Lisp code; or there might be a
bug in the OS or hardware that SBCL is running on.) If it seems
to be a bug in SBCL itself, the maintainers would like to know
about it. Bug reports are welcome on the SBCL mailing lists,
which you can find at <http://sbcl.sourceforge.net/>;.
   [Condition of type SB-INT:BUG]