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 mask=1U;
    uint16_t position=-1;
    for(int i=0;i<16;i++){
        if((reg& mask) !=0){
            position=i;
        }
        mask<<=1;
    }
    if (position==-1)
        return 0;
    return 1U<<position;
}

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

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

Solving Approach