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 temp = 32768;
    int count = 0;
    while (reg > 0) {
        if ((reg & temp) != 0) {
            temp = temp >> count;
            return temp;
        }
        reg = reg << 1;
        count++;
    }
    return 0;
}

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

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

Solving Approach