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  1. #include <stdio.h>
  2. void printhex(int n){
  3. 	if(0<=n&&n<=9)
  4. 	printf("%d",n);
  5. 	else if(n==10)
  6. 	printf("A");
  7. 	else if(n==11)
  8. 	printf("B");
  9. 	else if(n==12)
  10. 	printf("C");
  11. 	else if(n==13)
  12. 	printf("D");
  13. 	else if(n==14)
  14. 	printf("E");
  15. 	else if(n==15)
  16. 	printf("F");
  17. 	else
  18. 	return;
  19. }
  20.  
  21. void tohex(int n){
  22. 	if(n==0)
  23. 	return;
  24. 	else{
  25. 		tohex(n/16);
  26. 		printhex(n%16);
  27. 	}
  28. }
  29.  
  30. int main(void) {
  31. 	int n;
  32. 	scanf("%d",&n);
  33. 	tohex(n);
  34. 	return 0;
  35. }
  36.  
Success #stdin #stdout 0s 5308KB
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https://ideone.com/9ZQtcn
12-3
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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