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
    char hex[4];
    int i = 0;
    if (num == 0) {
        printf("0");
        return;
    }
    while (num > 0) {
        hex[i] = ((num % 16) >= 10) ? ((num % 16) + 55) : ((num % 16) + 48);
        num = num / 16;
        i++;
    }
    for (int j = i - 1; j >= 0; j--) {
        printf("%c",hex[j]);
    }
}

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

Solving Approach