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  1. %{
  2. #include <stdio.h>
  3. int uppercase = 0;
  4. int lowercase = 0;
  5. %}
  6.  
  7. %%
  8.  
  9. [a-z]     { lowercase++; }
  10. [A-Z]     { uppercase++; }
  11. \n        { printf("Uppercase characters: %d\nLowercase characters: %d\n", uppercase, lowercase); }
  12.  
  13. %%
  14.  
  15. int yywrap() {
  16.     return 1;
  17. }
  18.  
  19. int main() {
  20.     yylex();
  21.     return 0;
  22. }
  23.  
Success #stdin #stdout #stderr 0.03s 6932KB
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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/TLug3L/prog:22:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/LuPzjv
language:
Prolog (swi 7.6.4)
created:
13 hours ago
visibility:
public

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