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 f=0;
    for (int i =15 ; i>=0; i--){
        if (((reg >> i) & 1)==1){
             f=i;
            return reg & (1<<i);
        
        } 
    }
     

    return 0;
}

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

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

Solving Approach