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  1. %{
  2. #include <stdio.h>
  3. #include <ctype.h>
  4.  
  5. int line_count = 0;  
  6. int word_count = 0;  
  7. %}
  8.  
  9. %%
  10.  
  11. \n                  { line_count++; }            
  12. [a-zA-Z_][a-zA-Z0-9_]*  { word_count++; }         
  13.  
  14. %%
  15.  
  16. int main() {
  17.     printf("Enter input\n");
  18.  
  19.  
  20.     yylex();
  21.  
  22. printf("Lines: %d\n", line_count);
  23. printf("Words: %d\n", word_count);
  24. return 0;
  25. }
Success #stdin #stdout #stderr 0.02s 7004KB
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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/9KxhdL/prog:25:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/rDd5WW
language:
Prolog (swi 7.6.4)
created:
11 days ago
visibility:
public

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