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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. [0-9]      { printf("Input is a digit\n"); }
  7. .          { printf("Input is NOT a digit\n"); }
  8. \n         { return 0; }
  9. %%
  10.  
  11. int main()
  12. {
  13.     printf("Enter a character: ");
  14.     yylex();
  15.     return 0;
  16. }
  17.  
  18. int yywrap()
  19. {
  20.     return 1;
  21. }
  22.  
Success #stdin #stdout #stderr 0.02s 6824KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: /home/UXVJB9/prog:2:1: Syntax error: Operator expected
ERROR: /home/UXVJB9/prog:21:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/qANHXU
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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