The following questions tend to be asked regularly on the comp.lang.tcl newsgroup:
   * ''I have a large [C]/[C++] program, how do I make it scriptable with [Tcl]?''
   * ''I have a large C/C++ program, how do I add a [Tk] [GUI] to it?''

At a high level, there are three different solutions to consider.

  1.  Embed Tcl calls in my C/C++ code.

  2.  Wrap my C/C++ code to make it callable from Tcl.
      Replace the C/C++ main() with a tclsh/wish main program

  3.  Something else

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'''Embed Tcl Calls in C/C++ code'''

While the text
"[Why adding Tcl calls to a C/C++ application is a bad idea]"
is an interesting dialog concerning the appropriate
approach to performing this task,
where can one find specific coding examples and documentation
regarding what one needs to do, in a C program, if one needs to create
an interpreter and then execute tcl commands making use of that interpreter.

I do know there are two kinds of Tcl actions one can invoke from C/C++
Since Tcl is ''just'' a C library, some Tcl actions can be invoked by calling
the appropriate Tcl function call.

However, some things in Tcl must be done by invoking [Tcl_Eval], after 
appropriately setting up a Tcl interpreter.

Can someone provide some sample C or C++ code that shows setting up the
interpreter, then perhaps invoking things each way?

A dream scenario would do this for Tcl/Tk since that is a superset of
the same kind of request for Tcl... 

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