Keep Only the Highest Set Bit

Code

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

// Complete the function
int highest_set_bit(unsigned int reg) {
    // Your logic here
    int n,i;
    for( i=15;i>=0;i--){
        if((reg & (1<<i)) != 0){
           n=i;
           break;
        }
    }
    reg = (1<<i);
    return reg;
}

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

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

Solving Approach