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;  // No bits set
    uint16_t pos = 0;
    uint16_t temp = reg;
    while (temp != 0) {
        temp >>= 1;
        pos++;
    }
    return 1 << (pos - 1);
}

int main() {
    uint16_t reg;
    scanf("%hu", &reg);
    uint16_t result = highest_set_bit(reg);
    printf("%hu", result);
    return 0;
}

Solving Approach