Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
  for(int i=16-1;i>=0;i--)
  {
    if(reg&(1<<i))
    {
        for(int j=i-1;j>=0;j--)
        {
            reg &= ~(1<<j);
        }
        return reg;
    }
  }
  return 0;
}

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

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

Solving Approach