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  1. %{
  2. #include<stdio.h>
  3. %}
  4.  
  5. %%
  6.  
  7. [A-Za-z]+ {printf("Correct");}
  8. .*      {printf("Wrong");}
  9.  
  10. %%
  11.  
  12. int yywrap()
  13. {
  14.     return 1;
  15. }
  16.  
  17. int main() {
  18.     printf("Enter an alphabet:");
  19.     yylex();
  20. }
Success #stdin #stdout #stderr 0.02s 6884KB
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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/1RamKu/prog:20:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/XHJkW4
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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