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 highest_pos = 0;
    for(int pos=0; pos<16; pos++)
    {
        if((reg>>pos)&1)
        {
            highest_pos = pos;
        }
    }
    if(highest_pos == 0)
    {
        return 0;
    }
    else
    {
        reg = (1 << highest_pos);
    }
    return reg;
}

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

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

Solving Approach