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  1. %{
  2. #include <stdio.h>
  3. int count = 0;
  4. %}
  5.  
  6. %%
  7. .*green.*    { count++; }
  8. \n           ;
  9. .            ;
  10. %%
  11.  
  12. int main()
  13. {
  14.     printf("Enter text the :\n");
  15.     yylex();
  16.     printf("Number of lines containing 'green': %d\n", count);
  17.  
  18.     return 0;
  19. }
  20.  
  21. int yywrap()
  22. {
  23.  
  24.     return 1;
  25. }
  26.  
Success #stdin #stdout #stderr 0.02s 6940KB
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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/6hYnPU/prog:2:1: Syntax error: Operator expected
ERROR: /home/6hYnPU/prog:25:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/v5IDYB
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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