fork download
copy 
  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6.  
  7. "/*"([^*]|\*+[^/])*\*/    ;   // Ignore block comments
  8. [ \t\n]+                   ;   // Ignore whitespace
  9. "int"[ \t]+([a-zA-Z_][a-zA-Z0-9_]*)([ \t]*,[ \t]*[a-zA-Z_][a-zA-Z0-9_]*)*[ \t]*";" {
  10.     printf("Found int declaration: %s\n", yytext);
  11. }
  12. .                           ECHO; // Echo everything else
  13.  
  14. %%
  15.  
  16. int main(void) {
  17.     yylex();
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout #stderr 0.03s 6944KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
stderr
copy 
ERROR: /home/fTn4Yg/prog:2:1: Syntax error: Operator expected
ERROR: /home/fTn4Yg/prog:19:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/tVOhBc
language:
Prolog (swi 7.6.4)
created:
17 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!