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  1. %{
  2. #include <stdio.h>
  3.  
  4. int yywrap(void) {
  5.     return 1;
  6. }
  7. %}
  8.  
  9. %%
  10.  
  11. \"([^\\\"]|\\.)*\"    { printf("STRING: %s\n", yytext); }
  12. [a-zA-Z0-9_!#$%^&*()_+.]+   { printf("IDENTIFIER: %s\n", yytext); }
  13. [ \t\n]+              { /* skip whitespace */ }
  14. .                     { printf("UNKNOWN: %s\n", yytext); }
  15.  
  16. %%
  17.  
  18. int main(void) {
  19.     return yylex();
  20. }
  21.  
Success #stdin #stdout #stderr 0.02s 6924KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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ERROR: /home/o4xeie/prog:2:1: Syntax error: Operator expected
ERROR: /home/o4xeie/prog:20:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/NUyk8r
language:
Prolog (swi 7.6.4)
created:
2 days ago
visibility:
public

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