Keep Only the Highest Set Bit

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    uint16_t bit=0, result=0;
    if(reg != 0){
        for(int i=1;i<=16;i++){
            if((reg>>i)&1 == 1){
                bit = i;
            }
        }
        return (result |= (1U<<bit));
    }
    else{
        return 0;
    }
}

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

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