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 result = 0;   // to store compressed even bits
    int pos = 0;           // position in result

    for (int i = 0; i < 32; i += 2) {
        // extract the even-positioned bit
        uint32_t bit = (reg >> i) & 1;

        // place it in the result at position 'pos'
        result |= (bit << pos);

        // move to next result bit position
        pos++;
    }
    return result;
}

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

Solving Approach