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

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

    print_base(num, base);
    return 0;
}

Solving Approach