Training, Open Source computer languages
PerlPHPPythonMySQLApache / TomcatTclRubyJavaC and C++LinuxCSS 
Search for:
Home Accessibility Courses Diary The Mouth Forum Resources Site Map About Us Contact
For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Embedding Tcl in C

Posted by motif_user (motif_user), 30 June 2008

I am trying to embed tcl interpreter in my simple C code, but facing some issues.

Here is my code..
------------------------ my.c -------------

#include <stdio.h>
#include <tcl.h>

main (int argc, char *argv[])
     Tcl_Interp *interp;
     int  code;
     interp = Tcl_CreateInterp();
     code = Tcl_EvalFile(interp, argv[1]);
     if(*interp->result !=0)
           printf("myresult = %s \n", interp->result);
     if(code != TCL_OK)
---------------------- my.tcl -------------------
puts " Hi there!"
set temp [puts " bye !"]
------------------- out-put at consol ------------
Hi there!
bye !

I tried to debug and observed that output is getting generated from the interpreter itself and not from printf statement (as myresult string is missing at the output).

It will be helpful if someone can comment on these queries.

1)Is there any way to stop interpreter sending output to stdout?
2)Is there any way to capture interpreter's output to a variable instead of throwing it to consol?
3)*interp->result is NULL  ??


This page is a thread posted to the opentalk forum at and archived here for reference. To jump to the archive index please follow this link.

You can Add a comment or ranking to this page

© WELL HOUSE CONSULTANTS LTD., 2022: Well House Manor • 48 Spa Road • Melksham, Wiltshire • United Kingdom • SN12 7NY
PH: 01144 1225 708225 • FAX: 01144 1225 793803 • EMAIL: • WEB: • SKYPE: wellho