22. Extract Even Bits Only from 32-bit Register

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

uint32_t extract_even_bits(uint32_t reg) {
    // Your code here
    uint32_t result = 0,bit_pos = 0;
    for (uint32_t i=0;i < 31;i += 2)
    {
        uint32_t bit = ((reg >> i) & 1U);
        result |= (bit << bit_pos);
        bit_pos++;
    }
    return result;
}

int main() {
    uint32_t reg;
    scanf("%u", &reg);
    printf("%u", extract_even_bits(reg));
    return 0;
}