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
    if(reg == 0){
        reg = 0;
    }else{
        for(uint8_t i=15; i>=0; i--){
            if((reg>>i)&1){
                reg &= (1<<i);
                break;
            }
        }
    }
    
    return reg;
}

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

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

Solving Approach