Extract Even Bits Only from 32-bit Register

Code

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

uint32_t extract_even_bits(uint32_t reg) {
   uint32_t out = 0;
    uint8_t out_pos = 0;   // position in compressed output

    for (uint8_t i = 0; i < 32; i += 2)   // even positions
    {
        uint32_t bit = (reg >> i) & 1;   // extract even bit

        out |= (bit << out_pos);         // compress bit
        out_pos++;                       // next output bit position
    }

    return out;
}

int main() {
    uint32_t reg;
    scanf("%u", &reg);

    printf("%u", extract_even_bits(reg));   // print here only
    return 0;
}

Solving Approach