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  1. %{
  2. #include<stdio.h>
  3. %}
  4. %%
  5. if | 
  6. Else |
  7. While |
  8. Int |
  9. Switch | 
  10. For | 
  11. char |
  12. do |
  13. float |
  14. break |
  15. continue    {printf(“keyword”);}
  16. [a-z]([a-z]|[0-9])*    {printf(“identifier”);}
  17. [0-9]*        {printf(“number”);}
  18. .*    {printf(“invalid”);}
  19. %%
  20. main()
  21. {
  22. yylex();
  23. }
  24.  
Success #stdin #stdout #stderr 0.02s 6836KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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ERROR: /home/rA3LUP/prog:23:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/HDzoT7
language:
Prolog (swi 7.6.4)
created:
1 year ago
visibility:
public

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