Keep Only the Highest Set Bit

Code

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

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

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

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

Solving Approach