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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. ^[a-zA-Z_][a-zA-Z0-9_]*$    { printf("Correct\n"); }
  7. .*                          { printf("Wrong\n"); }
  8. %%
  9.  
  10. int yywrap() {
  11.     return 1;
  12. }
  13.  
  14. int main() {
  15.     yylex();
  16.     return 0;
  17. }
Success #stdin #stdout #stderr 0.04s 6872KB
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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/I5nuQN/prog:17:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/b62Yyf
language:
Prolog (swi 7.6.4)
created:
206 days ago
visibility:
public

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