Keep Only the Highest Set Bit

Code

#include <stdio.h>
#include <stdint.h>

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    int i = 0b1000000000000000; // first check from the highest bit
    uint16_t j =0;
    if(reg != 0)
    {
        while ((reg&i) ==0){
            i = i >> 1; // mov all bit of i to the left for 1 position
        }
    reg = reg&i;    
    return reg;
    }
    else{
        return 0;
    } 
    

}

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

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

Solving Approach