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  1. #include <stdio.h>
  2.  
  3. void printhex(unsigned x)
  4. {
  5. 	if( x )
  6. 	    printhex(x>>4),putchar("0123456789ABCDEF"[x&15]);
  7. }
  8.  
  9. int main(void) {
  10. 	unsigned u;
  11.  
  12. 	if( 1==scanf("%u",&u) )
  13. 	{
  14. 		if( u==0 )
  15. 			puts("0");
  16. 		else
  17. 			printhex(u);
  18. 	}
  19. 	return 0;
  20. }
  21.  
Success #stdin #stdout 0s 2056KB
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65534
stdout
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FFFE
https://ideone.com/Tynn9D
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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