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 = -1;
    for(int i = 15; i > -1 ; i--)
    {
        if((reg)&(1U<<i)){
            temp = i;
            return 1U << temp ;
        }

    }

    return 1U << temp ;
}

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

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

Solving Approach