fork download
copy 
  1. %option noyywrap
  2. %option never-interactive
  3.  
  4. %{
  5. #include <stdio.h>
  6. #include <stdlib.h>
  7. %}
  8.  
  9. %%
  10. ^[A-Za-z]+$      { printf("Correct\n"); return 0; }
  11. .*               { printf("Wrong\n");   return 0; }
  12. %%
  13. int main()
  14. {
  15.     yylex();
  16.     return 0;
  17. }
Success #stdin #stdout #stderr 0.03s 6940KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
stderr
copy 
ERROR: /home/51AU9h/prog:17:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/kuwYxY
language:
Prolog (swi 7.6.4)
created:
3 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!