Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    uint16_t i = 1;
    uint16_t pos1;
    uint16_t reg2 = reg;
    while(reg != 0)
    {
        reg=reg>>1;
        if(reg ==1)
        {
       pos1 = i;
       break;
        }
        i++;
    }
    reg2 &= (1<<pos1);
    return reg2;
}

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

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

Solving Approach