22. Extract Even Bits Only from 32-bit Register

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

uint32_t extract_even_bits(uint32_t reg) {
    uint32_t x=0,y=0;
    int c=0;
    for(int i=0;i<=30;i=i+2)
    {
        y=(reg>>i)&1;
        x|=y<<c;;
        c++;
    }
    return x;
}

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