Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {  ;
    reg |=  (reg>>1);
    reg |=  (reg>>2);
    reg |=  (reg>>4);
    reg |=  (reg>>8);
    reg |=  (reg>>16);
    reg |=  (reg>>32);
    reg |=  (reg>>64);
    reg |=  (reg>>128);
    reg |=  (reg>>512);
  
    

        return  (reg+1) >> 1;;

     

      



}

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

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

Solving Approach