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  1. %{
  2. #include <stdio.h>
  3. int vowels = 0, consonants = 0;
  4. %}
  5.  
  6. %%
  7. [aeiouAEIOU]    { vowels++; }
  8. [a-zA-Z]        { consonants++; }
  9. \n              { return 0; }  /* Stops execution when you press Enter */
  10. .               { /* Ignore spaces and punctuation */ }
  11. %%
  12.  
  13. int main() {
  14.     printf("Enter string: ");
  15.     yylex();
  16.     printf("Vowels: %d\nConsonants: %d\n", vowels, consonants);
  17.     return 0;
  18. }
  19. int yywrap() { return 1; }
Success #stdin #stdout #stderr 0.03s 6768KB
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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/MhXiir/prog:2:1: Syntax error: Operator expected
ERROR: /home/MhXiir/prog:19:25: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/4qFbJx
language:
Prolog (swi 7.6.4)
created:
11 hours ago
visibility:
public

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