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  1. %{
  2. #include <stdio.h>
  3. int digit = 0, letter = 0;
  4. %}
  5.  
  6. %%
  7.  
  8. [0-9]      { digit++; }
  9. [a-zA-Z]   { letter++; }
  10. .          { /* ignore */ }
  11.  
  12. %%
  13.  
  14. int main() {
  15.     yylex();
  16.     printf("Digits = %d, Letters = %d\n", digit, letter);
  17.     return 0;
  18. }
  19.  
  20. int yywrap() {
  21.     return 1;
  22. }
  23.  
Success #stdin #stdout #stderr 0.03s 7048KB
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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/BOCa47/prog:2:1: Syntax error: Operator expected
ERROR: /home/BOCa47/prog:22:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/gJztXy
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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