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  1. #include <stdio.h>
  2. int tohex(int n) {
  3.     if(n==0){
  4.         return ;
  5.     }
  6.     tohex(n/16);
  7.     int rem=n%16;
  8.     if(rem<10){
  9.         printf("%d",rem);
  10.     }else{
  11.         printf("%c",'A'+(rem-10));
  12.     }
  13. }
  14.  
  15. int main(void){
  16.     int a;
  17.     scanf("%d",&a);
  18.     printf("%d",tohex(a));
  19.     return 0;
  20. }
Success #stdin #stdout 0s 5292KB
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https://ideone.com/jSiZ2e
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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