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  1. %{
  2. #include <stdio.h>
  3. int vowels = 0;
  4. int consonants = 0;
  5. %}
  6.  
  7. %%
  8. [aeiouAEIOU]    { vowels++; }
  9. [a-zA-Z]        { consonants++; }
  10. .|\n            ;
  11. %%
  12.  
  13. int yywrap() { return 1; }
  14.  
  15. int main() {
  16.     printf("Enter the string: ");
  17.     yylex();
  18.     printf("Number of vowels: %d\n", vowels);
  19.     printf("Number of consonants: %d\n", consonants);
  20.     return 0;
  21. }
Success #stdin #stdout #stderr 0.03s 6940KB
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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/2Zgvo9/prog:21:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/WyBnyO
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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