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) {
        printf("%d", 0);
        return;
    }

    char result[7];
    int i = 0;

    while(num) {
        result[i++] = (num % 16 < 10) ? (num % 16 + '0') : (((num % 16) - 10) + 'A');
        num /= 16;
    }
    result[i] = '\0';

    for(int j = i - 1; j >= 0; j--) {
        putchar(result[j]);
    }
}

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

Solving Approach