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 pos = 0;

   for(uint8_t i = 15;i>0;i--)
   {
        if(reg & (1<<i))
        {
            pos = i;
            break;
        }
   }
     
    return reg & (1<<pos); 
}

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

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

Solving Approach