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
    uint8_t ui_len;
    for( ui_len =0;ui_len<16;ui_len++)
    {
        if((reg <<ui_len)&0x8000)
            break;
    }


    return (1<<(15-ui_len));
}

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

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

Solving Approach