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  1. %{
  2. #include<stdio.h>
  3. #include<string.h>
  4. int i = 0;
  5. %}
  6.  
  7. /* Rules Section*/
  8. %%
  9. ([a-zA-Z0-9])* {i++;} /* Rule for counting
  10.   number of words*/
  11.  
  12. "\n" {printf("%d\n", i); i = 0;}
  13. %%
  14.  
  15. int yywrap(void){}
  16.  
  17. int main()
  18. {
  19. // The function that starts the analysis
  20. yylex();
  21.  
  22. return 0;
  23. }
Success #stdin #stdout #stderr 0.02s 6960KB
stdin
Standard input is empty
stdout
Standard output is empty
stderr
ERROR: /home/QlD6LE/prog:23:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit