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  1. %{
  2.  
  3.  #include<stdio.h>
  4.  
  5.  
  6.  
  7. %}
  8.  
  9.  
  10.  
  11.  
  12.  
  13. %%
  14.  
  15. \/\/(.*) {};     
  16.  
  17. \/\*(.*\n)*.*\*\/ {};   
  18.  
  19. %%
  20.  
  21.  
  22.  
  23. int yywrap(){return 1;}
  24.  
  25.  
  26.  
  27. int main()
  28.  
  29. {
  30.  
  31.  yyin=fopen("hello.c","r");
  32.  
  33.  yyout=fopen("new.c","w");
  34.  
  35.  yylex();
  36.  
  37.  return 0;
  38.  
  39. }
Success #stdin #stdout #stderr 0.02s 6960KB
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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/RLA9UL/prog:39:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/iU8n1g
language:
Prolog (swi 7.6.4)
created:
9 hours ago
visibility:
public

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