Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t n) {
    // Your logic here
    n|=n>>1;
    n|=n>>2;
    n|=n>>4;
    n|=n>>8;
    // n|=n<<1;



    return n^(n>>1);
}

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

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

Solving Approach