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  1. %{ 
  2. 	#include<stdio.h> 
  3. 	int num, r, digit=0, count, pcount=0, i; 
  4. 	char a[20]; 
  5. %} 
  6.  
  7. DIGIT [0-9] 
  8. /* Rule Section */
  9. %% 
  10.  
  11. {DIGIT}+ { num=atoi(yytext); 
  12.  
  13. 		while(num!=0) 
  14. 		{ 
  15.  
  16. 			r=num%16; 
  17. 			digit='0'+r; 
  18. 			if(digit>'9') 
  19. 			digit+=7; 
  20. 			a[count++]=digit; 
  21. 			num=num/16; 
  22.  
  23. 		} 
  24.  
  25. 		for(i=count-1;i>=pcount;--i) 
  26. 				printf("%c", a[i]); 
  27. 				pcount=count; 
  28. 		}
  29.  
  30. %% 
  31.  
  32. // driver code 
  33. int main() 
  34. { 
  35. 	yylex(); 
  36. 	return 0; 
  37. }	 
  38.  
  39.  
Success #stdin #stdout #stderr 0.02s 6976KB
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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/GJsgMH/prog:38:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/4FPrTz
language:
Prolog (swi 7.6.4)
created:
282 days ago
visibility:
public

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