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

    for(int pos = 15; pos > -1; pos --)
    {
        if(reg & (1 << pos))
        {
            for(int i = pos - 1; i > -1; i--)
            {
                reg &= ~(1 << i);
            }

            return reg;
        }
    }

    return 0;
}

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

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

Solving Approach