120. Convert Integer to Hex String Without sprintf or itoa functions

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

void print_hex(uint16_t num) {
    // Your logic here
    char ans[4];
    int i=0;
    if(num==0)
    {
        printf("0");
        return;
    }
    while(num > 0)
    {
        uint8_t rem = num%16;
        if(rem>=10)
        {
            ans[i] = rem-10+'A';
        }
        else
        {
            ans[i] = rem+'0';
        }
        i++;
        num = num/16;
    }
    i--;
    while(i>=0)
    {
        printf("%c",ans[i]);
        i--;
    }
}

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