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
    uint16_t highest_bit = 0;
    for(int i = 0; i < 16; i++) {
        if(reg & 1U) {
            highest_bit = (1U << i);
        }
        reg >>= 1U;
    }
    return highest_bit;
}

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

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

Solving Approach