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  1. digit [0-9]*
  2.  
  3. string [a-zA-Z]*
  4.  
  5. END !
  6.  
  7. %%
  8.  
  9. {digit} printf("Digit: %s",yytext);
  10.  
  11. {string} printf("string: %s",yytext);
  12.  
  13. {END} {
  14.  
  15. printf("program ended");
  16.  
  17. return 0;
  18.  
  19. }
  20.  
  21. %%
  22.  
  23. int main()
  24.  
  25. {yylex();
  26.  
  27. }
  28.  
  29. int yywrap()
  30.  
  31. {
  32.  
  33. return 1;
  34.  
  35. }
  36.  
Success #stdin #stdout #stderr 0.02s 6964KB
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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/NFt4XE/prog:35:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/xm7Oad
language:
Prolog (swi 7.6.4)
created:
2 days ago
visibility:
public

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