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
    char result[32];
    int i = 0;

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

    while(num > 0){

        int rem = num % base;
        
        if(rem < 10) result[i++] = '0' + rem;

        else result[i++] = 'A' + (rem-10);

        num /= base;
    }

    // Digits are stored in reverse order
    for(int j = i-1; j >=0; j--){
        putchar(result[j]);
    }
}

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

    print_base(num, base);
    return 0;
}

Solving Approach