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 pos;
    for(uint16_t i=0 ;  i<16 ; i++)
    {
         if(reg &(1<<i))
         {
            pos = i;
         }
    }

    for(uint16_t i=0 ; i<16 ;i++)
    {
        if(i == pos)
        {
            continue;
        }
        reg &= ~(1<<i);
    }
    return reg;
}

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

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

Solving Approach