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 res = reg;
    int lar=0;
    for(int i=0; i<31; i++)
    {
        if((reg >> i)&1)
        {
            if(i>lar)
            {
                lar = i;
            }
        }
    }
    return (res & (1<<lar));
}

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

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

Solving Approach