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
    uint8_t count=0;
    uint8_t arr[16];
    for(int i=0;i<16;i++)
    {
        if(reg & (1<<i))
        {
            arr[count]=i;
            count++;
        
        }
    }
     for(int i=0;i< count-1;i++)
    {
        reg = reg & ~(1<<arr[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