Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    uint16_t i = 0;
    uint16_t pos = 0;
    uint16_t reg_temp = reg;
    while (reg_temp !=0)
    {
        if (reg_temp & 1 == 1) pos = i;
            reg_temp >>= 1;
        ++i;
    }
    
    return  reg & (1<<pos);
}

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

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

Solving Approach