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  1. %{
  2. #include<stdio.h>
  3. int words = 0;
  4. %}
  5.  
  6. %%
  7. [ ]+        ;
  8. [a-zA-Z]+   { words++; }
  9. \n          ;
  10. %%
  11.  
  12. int yywrap()
  13. {
  14.     return 1;
  15. }
  16.  
  17. int main()
  18. {
  19.     yylex();
  20.     printf("Total words = %d\n" , words);
  21.     return 0;
  22. }
Success #stdin #stdout #stderr 0.02s 6920KB
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stdin
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Student good morning.
stdout
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Standard output is empty
stderr
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ERROR: /home/vstlfA/prog:22:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/rhntNl
language:
Prolog (swi 7.6.4)
created:
4 days ago
visibility:
public

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