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  1. %{
  2. #include <stdio.h>
  3. %
  4. }
  5. %%
  6. ^[a-z A-Z _][a-z A-Z 0-9 _]* printf("Valid Identifier");
  7. ^[^a-z A-Z _] printf("Invalid Identifier");
  8. .;
  9. %%
  10. int main()
  11. {
  12. yylex();
  13. }
Success #stdin #stdout #stderr 0.03s 6868KB
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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/EtIT4G/prog:13:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/TicBnN
language:
Prolog (swi 7.6.4)
created:
6 days ago
visibility:
public

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