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  1. #include <stdio.h>
  2. int tohex(int n)
  3. {
  4.     int a;
  5.     if(n==0)
  6.         return;
  7.     else
  8.     {
  9.         tohex(n/16);
  10.         a=n%16;
  11.         if(a<10)
  12.             printf("%d",n%16);
  13.         else if(a==10)
  14.             printf("A");
  15.         else if(a==11)
  16.             printf("B");
  17.         else if(a==12)
  18.             printf("C");
  19.         else if(a==13)
  20.             printf("D");
  21.         else if(a==14)
  22.             printf("E");
  23.         else
  24.             printf("F");
  25.  
  26.     }
  27. }
  28.  
  29. int main(void) {
  30. 	int x;
  31.     scanf("%d",&x);
  32.     tohex(x);
  33.  
  34. 	return 0;
  35. }
  36.  
Success #stdin #stdout 0.01s 5292KB
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https://ideone.com/2fUXXe
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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