Keep Only the Highest Set Bit

Code

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

typedef uint16_t u16;
typedef uint8_t u8;

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    u8 pos = 0;

    while(reg) {
        reg = reg >> 1;
        pos++;
    }
    reg = (1 << (pos -1));
    return reg;
}

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

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

Solving Approach