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  1. %{
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4. %}
  5.  
  6. %%
  7.  
  8. [0-9]+    {
  9.               int n = atoi(yytext);
  10.               if (n % 2 == 0)
  11.                   printf("%d is Even\n", n);
  12.               else
  13.                   printf("%d is Odd\n", n);
  14.           }
  15.  
  16. [ \t\n]+  ;     
  17. .         ;     
  18.  
  19. %%
  20.  
  21. int main() {
  22.     yylex();
  23.     return 0;
  24. }
  25.  
  26. int yywrap() {
  27.     return 1;
  28. }
  29.  
Success #stdin #stdout #stderr 0.03s 6960KB
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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/LbJAC6/prog:2:1: Syntax error: Operator expected
ERROR: /home/LbJAC6/prog:28:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/6IO4gu
language:
Prolog (swi 7.6.4)
created:
5 days ago
visibility:
public

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