Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    uint8_t temp = 0;
    uint16_t temp_reg = reg;
    while(temp_reg != 0){
        temp++;
        temp_reg/=2;
    }
    for(uint8_t i = 0; i < temp - 1; i++){
        reg &=~(1<< i);
    }
    return reg;
}

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

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

Solving Approach