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;
 }
for (int i = 15; i>0 ; i--)
{

 if ( reg & (1<< i))
 {

 return reg &= (1<<i);

 }
}



}

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

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