Convert Decimal Number to Binary or Hex Without itoa function

Code

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

void print_base(uint16_t num, uint8_t base) {
    // Your logic here
    if(base == 2){
        int bin[32];
        int i =0;
        if(num == 0){
            printf("0");
            return;
        }
        while(num > 0){
            bin[i++] = num % 2;
            num = num / 2;
        }
        while(i > 0){
            printf("%d", bin[--i]);
        }
    }
    if(base == 16){
        char hex[8];
        int i = 0;
        uint8_t rem;

        if (num == 0) {
            printf("0");
            return;
        }

        while (num > 0) {
            rem = num % 16;

            if (rem < 10)
                hex[i++] = rem + '0';
            else
                hex[i++] = rem - 10 + 'A';

            num /= 16;
        }

        while (i > 0) {
            printf("%c", hex[--i]);
        }
    }
}

int main() {
    uint16_t num;
    uint8_t base;
    scanf("%hu %hhu", &num, &base);

    print_base(num, base);
    return 0;
}

Solving Approach