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 i = 16;
    uint16_t prevBit = 0;
    while(i>0){
        prevBit = (1<<i)&reg;
        if(prevBit){
            break;
        }
        --i;
    }
    return prevBit;
}

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

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

Solving Approach