Keep Only the Highest Set Bit

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    int n = -1;
    for (int i=15; i>=0; i--){
        if (reg & (1 << i)){
            n = i;
            break;
        }
    }
    if (n>=0) return 1 << n;
    else return 0;
}

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

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