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 j=0;
    for(int i=15;i>=0;i--){
        if((reg>>i)&1){
            j=i;
            break;
        }
    }
    int r=0;
    r|=(1<<j);
    return r;
}

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

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

Solving Approach