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
    for (int i = 15 ; i >= 0 ; i-- ){
        if (reg & (1 << i))  {
            for (int j = 0 ; j < i ; j ++){
            reg &= ~(1 << j);    
            }
            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