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 regnew;
    uint32_t regnew1;
    regnew=reg & 1;
    for(int i=2;i<32;i=i+2){
       regnew1 =reg & (1U<<i);
        regnew=regnew|(regnew1>>(i/2));
    }
    return regnew;
    
}

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