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 
    int pos = -1;
    int i=1;
    while(reg>0)
    {
        if((reg >> 1) == 1)
            pos = i;
        reg = reg >> 1;
        i++;
    }

    return 1<<pos;
}

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

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

Solving Approach