Keep Only the Highest Set Bit

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    // Step 1: Find the highest bit position
    uint16_t hbit=0;

    while (reg >= (1<<hbit))
    {
        hbit++;
    }
    hbit--;

    // Step 2: Clear all the bits excluding the highest bit position
    reg &= (1<<hbit);
    return reg;
}

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

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

Step 1: Find the highest bit position

uint16_t hbit=0;

    while (reg >= (1<<hbit))
    {
        hbit++;
    }
    hbit--;

Step 2: Clear all the bits excluding the highest bit position

 reg &= (1<<hbit);
 return reg;