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  1. %{
  2. #include <stdio.h>
  3.  
  4. int vowels = 0, consonants = 0;
  5. %}
  6.  
  7. %%
  8. [aeiouAEIOU]      { vowels++; }
  9. [a-zA-Z]          { consonants++; }
  10. \n                { 
  11.                     printf("Vowels = %d\n", vowels);
  12.                     printf("Consonants = %d\n", consonants);
  13.                   }
  14. %%
  15.  
  16. int yywrap()
  17. {
  18.     return 1;
  19. }
  20.  
  21. int main()
  22. {
  23.     printf("Enter a word: ");
  24.     yylex();
  25.     return 0;
  26. }
  27.  
Success #stdin #stdout #stderr 0.03s 6924KB
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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/bcPiL4/prog:26:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/IAHY6V
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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