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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. /* Rules Section*/
  8. %%
  9. ([a-zA-Z0-9])* {i++;} /* Rule for counting
  10.  number of words*/
  11. "\n" {printf("%d\n", i); i = 0;}
  12. %%
  13. int yywrap(void)
  14. {
  15. }
  16. int main ()
  17. {
  18.  // The function that starts the analysis
  19.  yylex();
  20.  return 0;
  21. }
Success #stdin #stdout #stderr 0.02s 6928KB
comments (?)
stdin 
helloworld
stdout 
Standard output is empty
stderr 
ERROR: /home/qAgrLU/prog:21:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/dTGLOl
language:
Prolog (swi 7.6.4)
created:
8 days ago
visibility:
public

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