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

    if(reg ==0)
        return 0;
    int pos=0;
    for (int i=0;i<16;i++){
        if((reg & (1<<i)) !=0)
            pos=i;
    }
    reg =0;
    reg |=(1<< pos);
    return reg;
}

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

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

Solving Approach