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  1.  1  %{
  2.  2  #include<stdio.h>
  3.  3  int i = 0, tab = 0, flag = 0;
  4.  4  %}
  5.  5  text    .*
  6.  6  %%
  7.  7  {text}  {
  8.  8      i = 0;
  9.  9      while(i < yyleng && yytext[i] == '\t')  i++;
  10. 10      if(yytext[i] == '}'){
  11. 11          tab--;
  12. 12          flag = 1;
  13. 13      }
  14. 14  
  15. 15      for(int j = 0; j < tab; j++)  printf("\t");
  16. 16      
  17. 17      for(; i < yyleng; i++){
  18. 18          if(yytext[i] == '{')    tab++;
  19. 19          if(yytext[i] == '}'){
  20. 20              tab--;
  21. 21              if(flag){
  22. 22                  flag = 0;
  23. 23                  tab++;
  24. 24              }
  25. 25          }
  26. 26          printf("%c", yytext[i]);
  27. 27      }
  28. 28  }
  29. 29  \n  {printf("\n");}
  30. 30  %%
  31. 31  int main(){
  32. 32      yylex();
  33. 33      return 0;
  34. 34  }
Success #stdin #stdout #stderr 0.04s 6948KB
comments (?)
stdin
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#include<iostream>
using namespace std;

int main(){
for(int fh1=0;fh1<10;fh1++){
for(int fh2=0;fh2<fh1;fh2++){
	cout<<"*";
}
cout<<"\n";
}
}
stdout
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Standard output is empty
stderr
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ERROR: /home/BGjajt/prog:34:4: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: Unknown option (h for help)
   Exception: (3) program ? ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: Can't ignore goal at this port
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: Unknown option (h for help)
   Exception: (3) program ? ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: Unknown option (h for help)
   Exception: (3) program ? ERROR: Unknown option (h for help)
   Exception: (3) program ? EOF: exit
https://ideone.com/d8Oc8K
language:
Prolog (swi 7.6.4)
created:
1 year ago
visibility:
public

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