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  1. %{
  2.     int space=0;
  3.     int taab=0;
  4.     int nextline=0;
  5.     int chara=0;
  6. %}
  7.  
  8. %%
  9. [" "] {space++;}
  10. [\t] {taab++;}
  11. [\n] {nextline++;}
  12. [A-Za-z0-9] {chara++;}
  13. %%
  14.  
  15. int main(){
  16.     yylex();
  17.     printf("space= %d \n",space);
  18.     printf("next line: %d \n",nextline);
  19.     printf("Tab: %d \n",taab);
  20.     printf("char: %d \n",chara);
  21. }
Success #stdin #stdout #stderr 0.03s 6904KB
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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/p34pNi/prog:21:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/4rT3iu
language:
Prolog (swi 7.6.4)
created:
288 days ago
visibility:
public

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