Extract Even Bits Only from 32-bit Register

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

uint32_t extract_even_bits(uint32_t reg) {
   uint32_t even_bits = 0;
   for(int i = 0; i < 32; i += 2){
        even_bits |= (((reg >> i) & 1) << (i/2));
   }
   return even_bits;
    
}

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