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  1. %{
  2. #include <stdio.h>
  3. int v = 0, c = 0; // Counters for vowels and consonants
  4. %}
  5.  
  6. %%
  7.  
  8. [aeiouAEIOU]   { v++; }        // Increment vowel count
  9. [a-zA-Z]       { c++; }        // Increment consonant count
  10. \n             { return 0; }   // Stop reading on newline
  11.  
  12. %%
  13.  
  14. int main() {
  15.     printf("Enter input: ");
  16.     yylex();  // Process input
  17.     printf("VOWELS = %d\nCONSONANTS = %d\n", v, c);
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout #stderr 0.02s 6984KB
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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/OIjImc/prog:19:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/A0PeHw
language:
Prolog (swi 7.6.4)
created:
4 days ago
visibility:
public

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