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
    int i = 0;
    int max = 0;
    while(i < 16)
    {
        if (reg & (1 << i)) 
        {
            max = i;
        }
        i++;
    }

    uint16_t bit = (1 << max) - 1;
    reg &= ~(bit);
    return reg;
}

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

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

Solving Approach