Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
   if(reg==0)
    return reg;
    uint32_t result =1;
    while(result <= reg){
        result <<= 1;
        }
        return (uint16_t) (result >>= 1);
    
}

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

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

Solving Approach