Keep Only the Highest Set Bit

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    if(reg == 0)
        return 0;

    while(reg & (reg - 1)) {
        reg = reg & (reg - 1);   // clears the lowest set bit
    }

    return reg;
    // Your logic here
}

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

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