Keep Only the Highest Set Bit

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


// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    int n=reg/16;
    if(n%2==0){
        return n*16;
    }else{
        return ((floor(n)+1)*16)/2;
    }
}

int main() {
    uint16_t reg;
    scanf("%hu", &reg);

    uint16_t result = highest_set_bit(reg);
    printf("%hu", result);
    return 0;
}