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 out = 0;
    uint32_t out_pos = 0;

    for(uint8_t pos = 0; pos < 32; pos +=2){
        uint32_t bit = (reg >> pos) & 1U;

        out|= (uint16_t)(bit << out_pos);
        out_pos++;
    }

    return out;
}

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