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 n = 0;
        if (num > 0x0f) 
            n = 7;
        else if (num > 0x00)
            n = 3;
        else
            n = 0;
        for (int i = n; i >= 0; i--) {
            printf("%d",(num>>i)&1);
        }
    }
    else {
        uint8_t temp[2];
        uint16_t val_temp = num;
        for (int i = 0; i < 2; i++) {
            temp[1-i] = val_temp % 16;
            val_temp = val_temp / 16;
        }
        for (int i = 0; i < 2; i++){
            printf("%c",(temp[i] < 10) ? ('0' + temp[i]):('A' + temp[i] - 10));
        }
    }
}

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

    print_base(num, base);
    return 0;
}

Solving Approach