Keep Only the Highest Set Bit

Code

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


uint16_t highest_set_bit(uint16_t reg) {
if(reg==0) return 0;
uint16_t find=1U<<15;
while((reg&find)==0)
{
 find=find>>1;
}
return find;
}

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

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

Solving Approach