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 tmp[4] = {0};
    int count = 0;

    char hex[17] = "0123456789ABCDEF";
    
    if (num == 0) {
        printf("0");
        return;
    }

    for(int i = 0; num > 0; i++) {
        tmp[i] = hex[num % 16];
        num /= 16;
        count++;
    }
    for(int i = 0; i < count; i++) {
        printf("%c", tmp[count - 1 - i]);
    }
}

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

Solving Approach