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  1. %option noyywrap
  2.  
  3. %{
  4.     #include <stdio.h>
  5.     int v = 0;
  6.     int c = 0;
  7. %}
  8.  
  9. %%
  10.  
  11. [AEIOUaeiou] { v++; }
  12. [A-Za-z]      { c++; }
  13.  
  14. %%
  15.  
  16. int main() {
  17.     printf("Enter a string:\n");
  18.     yylex();
  19.     printf("Vowels: %d\n", v);
  20.     printf("Consonants: %d\n", c - v); // Subtract vowels from total letters to get consonants
  21.     return 0;
  22. }
  23.  
Success #stdin #stdout #stderr 0.02s 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/Usv7Ja/prog:22:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/u94tJs
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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