Convert Integer to Hex String Without sprintf or itoa functions

Code

#include <stdio.h>
#include <stdint.h>

void print_hex(uint16_t num) {
    // Your logic here
    if(num == 0)
    {
        //printf("0");
        return;
    }else{
    print_hex(num/16);
    printf("%X",num%16);
    }
}

int main() {
    uint16_t num;
    scanf("%hu", &num);
    if(num == 0)
    printf("0");
    print_hex(num);
    return 0;
}

Solving Approach