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
    int i = 0;
    for ( i = 0; i < 16; i++)
    {
        if (((reg << i) & 0x8000) == 0x8000)
            break;                 
    }
    
    return (1 << (15 - i));
}

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

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

Solving Approach