# \#include \<SWI-cpp2.cpp\> error

**URL:** <https://swi-prolog.discourse.group/t/include-swi-cpp2-cpp-error/9048>\
**Category:** General\
**Created:** [June 9, 2025, 10:23am UTC](https://swi-prolog.discourse.group/t/include-swi-cpp2-cpp-error/9048 "2025-06-09T10:23:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hharryyf](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/hharryyf/32/5461_2.png) [@hharryyf](https://swi-prolog.discourse.group/u/hharryyf)\
**Post date:** [June 9, 2025, 10:23am UTC](https://swi-prolog.discourse.group/t/include-swi-cpp2-cpp-error/9048/1 "2025-06-09T10:23:10Z")

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I have swi-prolog version 9.0.4 on my ubuntu system, but when I tried to include #include \<SWI-cpp2.cpp\> in my program it says

 ![image](https://global.discourse-cdn.com/free1/uploads/swiprolog/original/2X/a/a83ce6de0e9db7a7d97980ce2939e9e547a097fd.png)  
Could you please tell me what’s wrong with this?

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**Author:** ![jan](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/jan/32/4_2.png) [@jan](https://swi-prolog.discourse.group/u/jan)\
**Post date:** [June 9, 2025, 6:07pm UTC](https://swi-prolog.discourse.group/t/include-swi-cpp2-cpp-error/9048/2 "2025-06-09T18:07:47Z")

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Your version is too old. Probably best is to install the PPA