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  1. #include <stdio.h>
  2.  
  3. void tohex(int n) {
  4.     if (n == 0) 
  5.         return;
  6.  
  7.  
  8.     tohex(n / 16);
  9.  
  10.     int a = n % 16;
  11.  
  12.     if (a < 10)
  13.         printf("%d", a);
  14.     if(a==10)
  15.         printf("A"); 
  16.     if(a==11)
  17.     	printf("B");
  18.     if(a==12)
  19.     	printf("C");
  20.     if(a==13)
  21.     	printf("D");
  22.     if(a==14)
  23.     	printf("E");
  24.     if(a==15)
  25.     	printf("F");
  26.  
  27. }
  28.  
  29. int main() {
  30.     int n;
  31.     scanf("%d", &n);
  32.  
  33.     if (n > 0) 
  34.         tohex(n);
  35.  
  36.     return 0;
  37. }
  38.  
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/ie3yrv
language:
C (gcc 8.3)
created:
20 days ago
visibility:
public

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