Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    int msb_pos = 15;
   for(int i = 15 ; i > 0 ; i--)
   {
    if(reg & (1 << i))
    {
        msb_pos = i;
        break;
    }
   }
   for(int i = 0; i < msb_pos; i++)
   {
    reg &= ~(1 << 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