Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    uint16_t n = (1 << 15);
    uint8_t i = 15; 

    for(; i >0 ; --i )
    {
        if(!(reg & n))
            n >>= 1;
        else 
            break;

    }

    if (i == 0)
        return 0;

    return n;
}

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

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

Solving Approach