Convert Decimal Number to Binary or Hex Without itoa function

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

void print_base(uint16_t num, uint8_t base) {
    // Your logic here
    char res[16];
    int i=0;

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

    else
    {
        while(num>0)
        {
            int temp=num%base;

            if(temp<10)
            {
                res[i++]=temp+'0';
            }
            else
            {
                res[i++]=temp-10+'A';
            }
            num/=base;
        }
    }
    for(int j=i-1;j>=0;j--)
    printf("%c",res[j]);
}

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

    print_base(num, base);
    return 0;
}