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 her
    if (reg == 0){
        return 0;
    }
    int n = 0;
    for (int i=0; 16 >= i; i++){ 
        if ((reg &(1<<i)) ){
            n = i;
        }
    }


    return (1<<n);
}

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

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

Solving Approach