Keep Only the Highest Set Bit

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    int val = 0;
    if(reg&(reg-1)==0)
        return reg;
     int i=0;
    for(i=0;i<16;i++){
        if(reg&(reg-1)){
          reg = reg&reg-1;
        }

    }
     
    
    return reg;
}

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

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