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  1. /*lex program to count number of words*/
  2. %{
  3. #include<stdio.h>
  4. #include<string.h>
  5. int i = 0;
  6. %}
  7.  
  8. /* Rules Section*/
  9. %%
  10. ([a-zA-Z0-9])*    {i++;} /* Rule for counting 
  11.                           number of words*/
  12.  
  13. "\n" {printf("%d\n", i); i = 0;}
  14. %%
  15.  
  16. int yywrap(void){}
  17.  
  18. int main()
  19. {   
  20.     // The function that starts the analysis
  21.     yylex();
  22.  
  23.     return 0;
  24. }
Success #stdin #stdout #stderr 0.02s 6828KB
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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/0XVoMI/prog:24:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/6Nrivd
language:
Prolog (swi 7.6.4)
created:
1 year ago
visibility:
public

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