Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    int nth_pos = 0;
    uint16_t result = 0;
    for(int index = 15; index >= 0; index--)
    {
        if(reg & (1 << index))
        {
            nth_pos = index;
            result = (1 << nth_pos);
            break;
        }
    }
    return result;
}

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

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

Solving Approach